Space & Physics
The Universe Is Ringing
How gravitational waves from colliding black holes are opening an entirely new way of exploring the cosmos
More than a century after Albert Einstein predicted them, gravitational waves are transforming astronomy. Ripples in space-time produced by colliding black holes and neutron stars are now being detected routinely, revealing a universe filled with violent mergers and cosmic echoes that have travelled billions of years to reach Earth.
A Ripple Across the Cosmos
When the densest objects in the universe collide, the impact does not simply end with the destruction or merger of stars. It sends ripples through the very fabric of space and time.
These ripples—known as gravitational waves—spread outward at the speed of light, crossing galaxies and cosmic voids for millions or even billions of years. By the time they reach Earth, they are unimaginably faint distortions of space itself.
Yet scientists have learned how to detect them.

A global network of observatories now monitors these tiny disturbances: the Laser Interferometer Gravitational-Wave Observatory (LIGO) in the United States, the Virgo detector in Italy, and the Kamioka Gravitational Wave Detector (KAGRA) in Japan. Together, these instruments form one of the most sensitive scientific experiments ever constructed, capable of detecting distortions smaller than the width of a proton.
Through them, astronomers have begun to “listen” to the universe.
And what they are hearing is astonishing.
A Universe Filled with Collisions
The LIGO–Virgo–KAGRA (LVK) Collaboration has now released the latest compilation of gravitational-wave detections, to appear in a special issue of Astrophysical Journal Letters. The findings suggest that the cosmos is reverberating with collisions far more frequently than scientists once imagined.
The newly released Gravitational-Wave Transient Catalog-4.0 (GWTC-4) includes detections from part of the observatories’ fourth observing run, conducted between May 2023 and January 2024.

In just nine months, the detectors recorded 128 new gravitational-wave candidates—signals that likely originated from extreme astrophysical events occurring hundreds of millions or billions of light-years away.
This newest batch more than doubles the size of the gravitational-wave catalog, which previously contained 90 candidates from earlier observing runs.
“The beautiful science that we are able to do with this catalog is enabled by significant improvements in the sensitivity of the gravitational-wave detectors as well as more powerful analysis techniques,” says Nergis Mavalvala, a member of the LVK collaboration and dean of the MIT School of Science.

What began in 2015 with the first historic detection has now become a steady stream of discoveries.
“In the past decade, gravitational wave astronomy has progressed from the first detection to the observation of hundreds of black hole mergers,” says Stephen Fairhurst, professor at Cardiff University and spokesperson for the LIGO Scientific Collaboration. “These observations enable us to better understand how black holes form from the collapse of massive stars, probe the cosmological evolution of the universe and provide increasingly rigorous confirmations of the theory of general relativity.”
When Black Holes Dance
Most gravitational waves detected so far originate from binary black holes—pairs of black holes locked in orbit around each other.
Over time, gravity draws them closer together. As they spiral inward, they release enormous amounts of energy in the form of gravitational waves. In the final fraction of a second, the two objects merge in a titanic collision, forming a single, larger black hole.
These cosmic dances are among the most energetic events in the universe.

Black holes themselves are born when massive stars collapse at the end of their lives, compressing enormous amounts of matter into regions so dense that not even light can escape.
Many form in pairs. When they eventually collide, the event sends gravitational waves surging through space.
The first such detection, announced in 2016, confirmed a century-old prediction of Einstein’s theory of general relativity. Since then, dozens—and now hundreds—of similar events have been observed.
But the latest catalog shows that the universe is far more diverse than scientists once believed.

Pushing the Edges of Black Hole Physics
The newly detected signals reveal a remarkable variety of cosmic systems.
Among them are the heaviest black hole binaries ever detected, systems where the masses of the two black holes are strikingly unequal, and pairs spinning at astonishing speeds.
“The message from this catalog is: We are expanding into new parts of what we call ‘parameter space’ and a whole new variety of black holes,” says Daniel Williams, a research fellow at the University of Glasgow. “We are really pushing the edges, and are seeing things that are more massive, spinning faster, and are more astrophysically interesting and unusual.”

One particularly dramatic signal—GW231123_135430—appears to have originated from two enormous black holes, each roughly 130 times the mass of the Sun. Most previously observed mergers involved black holes closer to 30 solar masses.
The extraordinary size of these objects suggests they may themselves have formed from earlier black hole mergers—a kind of cosmic generational chain.
Another remarkable event, GW231028_153006, revealed a binary in which both black holes are spinning at around 40 percent of the speed of light.
And in GW231118_005626, scientists detected an unusually uneven pair where one black hole is roughly twice as massive as the other.
“One of the striking things about our collection of black holes is their broad range of properties,” says Jack Heinzel, an MIT graduate student who contributed to the catalog’s analysis. “Some of them are over 100 times the mass of our sun, others are as small as only a few times the mass of the sun. Some black holes are rapidly spinning, others have no measurable spin.”
“We still don’t completely understand how black holes form in the universe,” he adds, “but our observations offer a crucial insight into these questions.”

Catching a Whisper in Space-Time
Detecting gravitational waves requires extraordinary precision.
The observatories use L-shaped interferometers with arms several kilometers long. Laser beams travel down these tunnels and reflect back to their source.
If a gravitational wave passes through the detector, it slightly stretches one arm while compressing the other, changing the distance the light travels by an incredibly tiny amount.
These changes can be smaller than one-thousandth the diameter of a proton.
Even with such advanced technology, detections remain unpredictable.

“You can’t ever predict when a gravitational wave is going to come into your detector,” says Amanda Baylor, a graduate student at the University of Wisconsin–Milwaukee who worked on the signal search. “We could have five detections in one day, or one detection every 20 days. The universe is just so random.”
Recent upgrades have dramatically improved the detectors’ reach. LIGO can now detect signals from neutron star collisions up to one billion light-years away, and black hole mergers far beyond that.
Testing Einstein’s Ultimate Theory
Gravitational waves are not only revealing spectacular cosmic events. They are also providing some of the most extreme tests ever conducted of Einstein’s theory of general relativity.
Black holes themselves are one of the most extraordinary predictions of the theory.
“Black holes are one of the most iconic and mind-bending predictions of general relativity,” says Aaron Zimmerman, associate professor of physics at the University of Texas at Austin.
When two black holes collide, he explains, they “shake up space and time more intensely than almost any other process we can imagine observing.”
One particularly powerful signal—GW230814_230901—allowed scientists to analyze the structure of the gravitational wave in exceptional detail.
“So far, the theory is passing all our tests,” Zimmerman says. “But we’re also learning that we have to make even more accurate predictions to keep up with all the data the universe is giving us.”

Measuring the Expansion of the Universe
Gravitational waves are also becoming powerful tools for answering one of cosmology’s biggest questions: how fast the universe is expanding.
Astronomers measure this expansion using the Hubble constant, but different methods have produced conflicting results.
Gravitational waves offer an independent approach.
“Merging black holes have a really unique property: We can tell how far away they are from Earth just from analyzing their signals,” says Rachel Gray, a lecturer at the University of Glasgow.
“So, every merging black hole gives us a measurement of the Hubble constant, and by combining all of the gravitational wave sources together, we can vastly improve how accurate this measurement is.”
Using the current gravitational-wave catalog, scientists estimate that the universe is expanding at roughly 76 kilometers per second per megaparsec.
For now, the uncertainty remains large—but future detections could sharpen the measurement significantly.

Listening to the Future
Only a decade ago, gravitational waves were purely theoretical signals.
Today, they are transforming astronomy.
With every new detection, scientists gain another glimpse into the hidden life of the universe: the birth of black holes, the evolution of galaxies, and the behavior of gravity under the most extreme conditions imaginable.
“Each new gravitational-wave detection allows us to unlock another piece of the universe’s puzzle in ways we couldn’t just a decade ago,” says Lucy Thomas, a postdoctoral researcher at the Caltech LIGO Lab.
“It’s incredibly exciting to think about what astrophysical mysteries and surprises we can uncover with future observing runs.”
The instruments on Earth are quiet, their lasers moving silently down vacuum tunnels. But far beyond our galaxy, black holes continue to collide.
And with each collision, the universe sends out another ripple—another echo across the cosmos—waiting for us to hear it.
Space & Physics
How India’s Semiconductor Industry Rose From Ashes to Atoms
How India is rebuilding its semiconductor future—from a lost opportunity in the 1980s to a high-stakes push to master the science, scale, and systems that define the global chip industry.
India’s semiconductor ambition is not merely an industrial policy experiment—it is an attempt to rebuild a technological capability lost decades ago, and to do so in a world where chips have become instruments of economic power and geopolitical leverage. From the ashes of an early setback to a renewed push backed by billions in investment, the country is seeking to construct an ecosystem that spans physics, engineering, and global supply chains. The challenge is not simply to manufacture chips, but to master the science, scale, and systems that define the industry—an effort that will unfold not over years, but over generations.
From early setbacks to a renewed national push, India is attempting to build one of the world’s most complex industrial ecosystems – where physics, policy, and geopolitics converge.

In the early months of 1989, India’s most ambitious experiment in semiconductor manufacturing came to an abrupt halt. A fire tore through the country’s primary chip fabrication facility in Mohali, Punjab, crippling an ecosystem that had taken years to build and, more importantly, interrupting a trajectory that might have placed India far closer to the global frontier.
The Semiconductor Complex Limited (SCL), established in 1976, had begun producing chips in 1984—at 5000 nanometers, just one generation behind global standards. India was not leading the semiconductor race, but it was not far behind either—especially in an industry where catching up later becomes exponentially harder.
This was only 13 years after Intel introduced the world’s first microprocessor—and three years before Taiwan Semiconductor Manufacturing Company (TSMC) began production. The fire changed everything. Its cause was never officially determined. Investigators noted that it appeared to have started at multiple points—fuelling speculation of sabotage. What followed was not just physical damage, but institutional collapse.
India lost infrastructure.
India lost talent.
India lost time.
The disruption was not merely industrial. It was institutional. Engineers dispersed, expertise dissipated, and momentum stalled. By the time operations resumed years later, the global semiconductor landscape had already shifted irreversibly. Today, SCL—now a research-focused facility—produces legacy chips of around 180 nanometers, primarily for defence and space applications. Meanwhile, TSMC is manufacturing 3-nanometer chips and preparing for 2-nanometer production.

The gap is not incremental, it is generational. India imported semiconductor chips worth nearly $20 billion in 2024, with demand growing rapidly as electronics penetrate every aspect of life. And yet, semiconductors remain invisible—embedded in everything, owned by others. TSMC produces chips for global giants like Apple and Nvidia. SCL serves strategic domestic needs
More than three decades on, India is attempting to rebuild that lost trajectory.
But the context has changed. Semiconductors are no longer obscure components buried within devices. They are the foundation of artificial intelligence, telecommunications, defence systems, and economic competitiveness. They shape not just markets, but geopolitics.
India is not simply re-entering an industry it once attempted to build. It is stepping into one of the most complex and strategically contested systems in the modern world.
In March 2026, Prime Minister Narendra Modi inaugurated a INR 3,300 crore semiconductor facility in Gujarat, declaring India a “reliable global supplier” in an increasingly fragmented chip economy. Around the same time, Union Minister Ashwini Vaishnaw announced that multiple semiconductor plants are expected to come online over the next few years, with the first fabrication output targeted before the end of the decade. But behind the announcements lies a deeper reality. India is not building a factory. It is attempting to build one of the most complex scientific-industrial ecosystems ever created.

The Physics Beneath the Industry
To understand the scale of India’s ambition, it is necessary to understand what a semiconductor actually is—not as a product, but as a process. Modern chips are constructed at nanometre scales, where the behaviour of electrons begins to defy classical expectations. Transistors—billions of which are embedded within a single chip—operate by controlling the flow of these electrons through carefully engineered silicon structures. But as these structures shrink, the physics becomes increasingly unstable.
Electrons leak across barriers that were once reliable. Heat accumulates in ways that are difficult to dissipate. Materials behave unpredictably under extreme miniaturisation. What appears as incremental progress in computing power is, in reality, a constant negotiation with the limits of matter.

“A single wafer can take three to four months to manufacture, and there are hundreds of layers that have to be deposited,” notes Neelkanth Mishra, an expert on India’s semiconductor policy and Chief Economist at Axis Bank.
Each of these layers involves a sequence of deposition, etching, doping, and cleaning processes, repeated dozens of times with near-perfect precision. The tolerances are so tight that even microscopic contaminants can render entire batches unusable.
“The chemicals used in wafer cleaning are extraordinarily high purity, and even small impurities can affect yields,” Mishra adds. The process is not only delicate but energy-intensive. As IIT Bombay’s Udayan Ganguly explains, a single thermal step in fabrication can raise the temperature of a silicon wafer from ambient levels to over 1,000 degrees Celsius within seconds, requiring enormous power and precise control.
What emerges from this process is not simply a manufactured object, but a highly controlled physical system—engineered at scales where conventional intuition no longer applies.
A System Defined by Control
If the science of semiconductors is unforgiving, the global ecosystem built around it is equally restrictive.
“From design software to lithography to testing equipment, 90% of the industry is controlled by just two or three companies in each segment,” Mishra observes.

This concentration reflects decades of accumulated expertise, capital investment, and intellectual property. In some areas, such as extreme ultraviolet lithography—the process required to produce the most advanced chips—the dependence is even more pronounced.
“If you want to do extreme ultraviolet lithography, there is only one company in the world that can do it.” Such chokepoints have transformed semiconductors into strategic assets. Access to technology is no longer determined solely by markets, but increasingly by geopolitical alignment and national priorities.
For countries seeking to build domestic capabilities, this creates a paradox: the need to integrate into a global system while simultaneously reducing dependence on it.
India’s Semiconductor Industry: Policy Meets Scale
India’s renewed push into semiconductors is structured around this tension.
The India Semiconductor Mission, launched in 2022 with a substantial fiscal outlay, represents one of the most ambitious industrial policy initiatives in the country’s recent history. Since then, the government has approved ten semiconductor projects with investments exceeding ₹1.6 lakh crore across six states, covering fabrication, packaging, and specialised semiconductor technologies.

This is not an isolated effort. It is an attempt to build multiple layers of the value chain simultaneously. Early investments have focused on assembly, testing, and packaging facilities—segments that are less capital-intensive and can be scaled relatively quickly. Projects such as the Micron packaging facility in Gujarat, along with other recently approved units, are expected to serve as entry points for building industrial capability.
At the same time, larger and more complex initiatives—such as the proposed fabrication facility in Dholera—are intended to anchor the ecosystem over the longer term.
The second phase of the mission signals a shift in emphasis. Beyond manufacturing, the focus is expanding to include materials, equipment, and intellectual property—areas that are critical for long-term self-reliance.
Prime Minister Narendra Modi has framed semiconductors as central to India’s technological future, calling for the country to become a “reliable global supplier.” Union Minister Ashwini Vaishnaw has indicated that multiple plants are expected to become operational within this decade.
India’s Semiconductor Industry and The Design Advantage
Despite its limited manufacturing footprint, India occupies a significant position in the global semiconductor landscape through design.
Nearly one-fifth of the world’s semiconductor design engineers are based in the country. Global firms rely on Indian teams to develop chips used in everything from consumer electronics to advanced computing systems. Nearly 20% of the global semiconductor design workforce is based in India. Companies such as Intel, Qualcomm, Nvidia, AMD, and Broadcom rely on Indian engineers for chip design.

“In a ten-dollar chip, five to six dollars of value is captured by the designer,” Mishra points out. This concentration of talent provides India with a strategic advantage, particularly in a world where intellectual property increasingly determines value. India has mastered design. What it has not yet built is manufacturing scale. However, this strength has historically been tied to global companies. The challenge now is to translate it into domestic capability—developing Indian firms that can own and commercialise their designs.
The Ecosystem Question
The central challenge for India lies not in any single segment of the semiconductor value chain, but in the integration of all its components.
“You cannot just build wafer fabs. You need everything—from capital equipment to chemicals—to make the ecosystem viable,” Mishra says.
A semiconductor industry requires:
- Reliable energy and water infrastructure
- Access to specialised materials and gases
- Advanced manufacturing equipment
- A continuous pipeline of skilled talent
It also requires coordination across institutions.
“The ecosystem is a triple helix—academia, industry, and government,” says Swaroop Ganguly of IIT Bombay. “Without tight collaboration, it cannot work.”
This interdependence makes semiconductors fundamentally different from most other industries. Progress in one area depends on parallel advances in others.

Institutions That Sustained the Science
Even during the decades when India lacked large-scale manufacturing, certain institutions preserved and advanced semiconductor research.
At IIT Bombay, work in microelectronics dates back to the 1970s, when the institute began building capabilities in semiconductor devices and integrated circuits. Over time, this evolved into more sophisticated infrastructure, including cleanroom facilities and collaborative programmes with organisations such as ISRO.
The establishment of the Centre of Excellence in Nanoelectronics (CEN) in the early 2000s further strengthened this foundation, enabling advanced research in semiconductor devices and fabrication techniques. By the late 2010s, India had emerged as a significant contributor to global semiconductor research, with IIT Bombay playing a leading role in experimental nanoelectronics.
In 2023, these efforts were consolidated under SemiX, a dedicated centre aimed at integrating research, talent development, and industry collaboration.

The Economics of Dependence
Semiconductors underpin virtually every modern activity, yet their economic footprint often goes unnoticed. “Every time you go to a doctor, drive a car, or watch a movie—you are effectively paying a semiconductor fee,” says Udayan Ganguly.
The observation is less rhetorical than it appears. As digital systems expand, the cost of semiconductors becomes embedded in everything from healthcare to transportation.
“If India does not control semiconductors to some extent, we are basically fighting a losing battle.”
This framing shifts the conversation from industrial policy to economic sovereignty. Control over semiconductors is not merely about manufacturing capacity; it is about retaining value within the economy.
Innovation as a Continuous Process
One of the defining characteristics of the semiconductor industry is its pace of change. “Semiconductors are not a bandwagon you jump onto—it’s a treadmill,” Ganguly notes. “If you stop running, you fall off.” Technological progress is relentless. Every generation of chips introduces new architectures, materials, and manufacturing techniques. Companies that fail to keep up quickly lose relevance.
“You cannot just build a plant and expect to coast,” Udayan Ganguly adds.
For India, this implies that building initial capacity is only the first step. Sustained investment in research and development will be essential to remain competitive.
Scaling Talent and Capability
India’s talent base is often cited as its greatest advantage, but scaling that advantage presents its own challenges. “We have the core capability,” says Udayan Ganguly. “But to meet demand, we need to scale talent by at least ten times.” This expansion cannot rely solely on elite institutions. It requires a broader transformation of engineering education, incorporating interdisciplinary training across physics, chemistry, materials science, and mechanical engineering. “Semiconductors are not just electronics,” Swaroop Ganguly emphasises. “They require multiple disciplines working together.”

The Long Horizon
Semiconductor ecosystems are not built quickly. The experience of other countries underscores this timeline. Taiwan, South Korea, and China invested consistently over decades before achieving their current positions.
“The Chinese started investing in the late 1990s and are still building capabilities—this is at least a 15–20 year journey,” Mishra notes.
For India, the challenge is not only to start, but to sustain momentum across political and economic cycles.
According to government estimates, India is expected to achieve the capability to design and manufacture chips for 70–75% of domestic applications by 2029. Building on this foundation, the next phase under Semicon 2.0 will prioritize advanced manufacturing, with a defined roadmap to reach 3-nm and 2-nm technology nodes. By 2035, India aims to establish itself as one of the world’s leading semiconductor nations.
India’s semiconductor industry ambitions are rooted as much in history as in future aspirations. The loss of early momentum in the late twentieth century delayed its entry into an industry that rewards continuity and scale. Today, the country is attempting to rebuild that trajectory under far more complex conditions. The progress made so far—policy frameworks, investment commitments, institutional capacity—suggests that the foundation is being laid. But the real test lies ahead.
Semiconductors are not merely manufactured. They are engineered—through sustained effort, coordinated systems, and long-term commitment.
From the ashes of past setbacks to the atomic precision of modern chipmaking, India’s semiconductor journey has begun again. Whether it can be sustained will determine not just the future of an industry, but the contours of technological power in the decades to come.
Space & Physics
Inside India’s Semiconductor Push: ‘This Is a 100-Year Bet’
This is not an industry that rewards speed alone; it demands persistence, coordination, and long-term commitment. In semiconductors, success is not measured in years, but built over generations.
In a conversation with Education Publica Editor Dipin Damodharan, leading semiconductor researchers Swaroop Ganguly and Udayan Ganguly delve into the science, strategy, and systemic challenges shaping India’s chip ambitions. Both are professors in the Department of Electrical Engineering at the Indian Institute of Technology Bombay. Swaroop Ganguly currently leads SemiX—the institute’s semiconductor initiative that brings together expertise across disciplines to advance India’s capabilities in the sector. Udayan Ganguly previously headed SemiX. India’s semiconductor journey, they argue, is only just beginning. The foundations— policy, infrastructure, talent, and partnerships—are being put in place, but the real challenge lies ahead. This is not an industry that rewards speed alone; it demands persistence, coordination, and long-term commitment. In semiconductors, success is not measured in years, but built over generations. Edited excerpts
India Semiconductor Mission: ‘This Is a 100-Year Bet’
India formally launched the semiconductor mission in 2021. Five years on, where does the country stand today?
Swaroop Ganguly:
The India Semiconductor Mission really began taking shape around 2021, but for a couple of years it was largely policy without visible industry participation. The turning point came around 2023 with the approval of the Micron packaging facility. That was important not just as a project, but as a signal—that global companies were willing to invest in India.
Following that, we saw a series of announcements, particularly in packaging and assembly. Now, packaging is not the highest value-add segment in the semiconductor value chain, but it is still a very important step. It generates employment, it helps build supporting capabilities, and it allows the ecosystem to start forming.

But the real centrepiece—the crown of the semiconductor ecosystem—is the fabrication facility, or fab. That is where silicon wafers are actually processed into chips. We now have at least one major fab announcement, and that is a very significant milestone.
At the same time, we should be careful not to judge progress too quickly. This is not an industry where outcomes can be evaluated in five years. The correct time horizon is at least 10 to 15 years.

Why did India take so long to enter this space, especially given its strength in technology?
Swaroop Ganguly:
It’s not entirely accurate to say India never tried. There were attempts in the past. In fact, in the 1980s, India had a silicon fabrication facility in Chandigarh that was not very far behind global standards at that time.
Unfortunately, that facility was destroyed in a fire, and that event set India back significantly—by decades, in fact. But the loss was not just infrastructure. It was also talent. Many of the people who were working there moved abroad and went on to become leaders in global semiconductor companies.
When you lose something like that, you don’t just lose a facility—you lose the continuity of knowledge, mentorship, and ecosystem-building. That has long-term consequences.
After that, the global semiconductor industry moved very fast, and re-entering it became increasingly difficult. It required a level of policy support and industrial coordination that did not exist at the time. That is what has changed with the India Semiconductor Mission.

How should we interpret the progress under India Semiconductor Mission 1.0 (ISM 1.0)? Has it delivered what was expected?
Swaroop Ganguly:
I think it would be a mistake to look at ISM 1.0 as something that should have delivered results within five years. This industry demands a long-term, patient approach.
ISM 1.0 has led to the approval of multiple manufacturing-related units, most of them in packaging. That is actually a sensible place to begin. Countries like Taiwan and South Korea also started their semiconductor journeys with packaging before moving up the value chain.
There has also been progress in specialty areas such as compound semiconductors, which are used in applications like power electronics, renewable energy, and communications.
So overall, I would say the direction is correct. But the success of ISM should be evaluated over a much longer period—10 to 15 years at least.
So India Semiconductor Mission (ISM) 2.0 is not a reset, but an expansion?
Swaroop Ganguly:
Exactly. ISM 2.0 should be seen as an expansion of scope.
In ISM 1.0, the focus was largely on attracting manufacturing—fabs and packaging units. Now, the thinking is evolving towards building a more complete ecosystem.
That means looking at materials, chemicals, gases, equipment, and all the ancillary industries that support semiconductor manufacturing. At the same time, there is increasing emphasis on research, innovation, education, and training.
This is important because semiconductors are not a one-time investment. As we often say, this is not a bandwagon you jump onto—it’s a treadmill.
What do you mean by that analogy?
Swaroop Ganguly:
The treadmill analogy simply means that once you enter this industry, you have to keep moving. If you stop, you fall off.
Udayan Ganguly:
Yes, and the reason is very simple. The industry evolves continuously. Every couple of years, chips become more powerful, more efficient, more densely packed.
If you don’t keep up with that pace of innovation, your products become uncompetitive. Unlike many other industries, you cannot just build a plant and continue producing the same thing for decades.

For a layperson, what does this “semiconductor moment” actually mean for India?
Udayan Ganguly:
Think about everything you do today—medicine, education, transportation, entertainment. All of it runs on semiconductors.
Now imagine that every time you engage in any of these activities, you are effectively paying someone else for that underlying technology.
You go to a doctor—you are paying a semiconductor fee.
You drive a car—you are paying a semiconductor fee.
You watch a movie—you are paying a semiconductor fee.
So the question is: can a country continue to grow while constantly paying for the technological backbone of its economy?
So this is fundamentally about control over technology?
Udayan Ganguly:
Absolutely.
If India does not control semiconductors to some extent, we are basically fighting a losing battle. This is not just about manufacturing chips—it is about controlling the substrate on which modern society operates.
And this is not a short-term project. This is a 100-year bet. Even building meaningful capability will take at least 30 years.
What are the biggest challenges India faces in this journey?
Udayan Ganguly:
There are three core challenges: technology, talent, and governance.
On technology, the reality is that only a handful of companies globally have access to cutting-edge capabilities. These are not technologies that can simply be purchased at cost.
So India will have to start with slightly older technologies, which is perfectly fine. That is how most countries begin.
On talent, it is not just about having engineers—it is about having deep know-how. The ability to solve problems, innovate, and adapt.
And on governance, this is not a free-market industry. It requires sustained policy support and coordination. Without that, it cannot take off.

What role do startups and academia play in this ecosystem?
Swaroop Ganguly:
They are central to innovation.
India has had design centres of global semiconductor companies for decades. But what we have not had is a large number of products that are designed, owned, and commercialised by Indian companies.
That is where startups and academia come in.
Innovation typically emerges from these spaces—either from academic research translating into startups, or from experienced professionals building new companies.
Can startups play a role in manufacturing as well?
Swaroop Ganguly:
Manufacturing is much more capital-intensive, so it is difficult for startups to enter that space in the conventional sense.
However, there are opportunities in specialised areas—materials, processes, equipment components—where startups can contribute.
Academia also plays a critical role, particularly in advancing research that can feed into industry.
Is there a missing link in India’s semiconductor ecosystem today?
Udayan Ganguly:
Yes—R&D infrastructure.
Globally, there are dedicated semiconductor research centres where new ideas can be tested at scale without disrupting commercial manufacturing.
These centres act as a bridge between academia and industry.
India needs similar facilities. Without them, it becomes difficult to translate research into real-world applications.
What about talent—are we producing enough skilled people?
Udayan Ganguly:
We have strong core capability, but we need to scale significantly.
To meet the demands of a domestic semiconductor ecosystem, we probably need to increase our talent pool by at least ten times.
And this is no longer just about selecting the best candidates. It is about building a pipeline—training, education, and capacity-building across institutions.

Is semiconductor engineering limited to electronics?
Swaroop Ganguly:
Not at all. That is a common misconception.
Semiconductor manufacturing is highly interdisciplinary. It involves physics, chemistry, materials science, and mechanical engineering.
For example, consider a thermal processing step in fabrication. A wafer can be heated from room temperature to over 1000°C in a matter of seconds and then cooled rapidly. That involves complex thermal and mechanical engineering.
So the opportunities extend far beyond traditional electronics.
Who are the key stakeholders in building this ecosystem?
Swaroop Ganguly:
It essentially comes down to three groups: academia, industry, and government.
These three must work together very closely. Without that collaboration, the ecosystem cannot develop.
Government provides policy and support. Industry drives manufacturing and commercialisation. Academia contributes research, talent, and innovation.

Does India need to increase its R&D spending?
Swaroop Ganguly:
Spending is already increasing, which is a positive sign.
But equally important is how that money is used. There are global models where competing companies collaborate on early-stage research, pooling resources and working with academia.
Such models can significantly improve the effectiveness of R&D investment.
Finally, are you optimistic about India’s semiconductor journey?
Udayan Ganguly:
Yes, broadly.
The policy direction is strong, and the incentives are competitive. But this is not something that will succeed automatically.
It requires sustained effort over decades.
Swaroop Ganguly:
Exactly. The direction is right, but the time horizon is long. This is not a sprint—it is a marathon.
Space & Physics
JWST study reveals how rare exoplanet pair formed
MIT study uses JWST to decode a rare exoplanet system, revealing how mini-Neptunes form beyond the frost line.
Astronomers have uncovered fresh clues about how distant worlds form, thanks to a new JWST mini-Neptune study that examines a rare planetary system 190 light years away. Using NASA’s powerful space telescope, researchers analysed the atmosphere of a small gas planet orbiting unusually close to its star — and found evidence that challenges long-held assumptions about where such planets originate.
In a discovery that’s quietly reshaping how astronomers think about planet formation, scientists have uncovered new clues behind one of the Milky Way’s strangest planetary pairings — a hot Jupiter and a mini-Neptune orbiting the same star.
The finding by scientists from MIT, based on observations from NASA’s James Webb Space Telescope (JWST), suggests that these two unlikely neighbours didn’t form where they are today. Instead, they likely began life much farther out in their star system and gradually migrated inward — staying together against the odds. The study, appeared in The Astrophysics Journal of Letters, reveals new measurements of the mini-Neptune’s atmosphere.
JWST mini-Neptune study : A rare planetary pairing
The system, located about 190 light years from Earth, has puzzled astronomers since its discovery in 2020. Hot Jupiters — massive gas giants that orbit very close to their stars — are usually “lonely,” with no nearby planetary companions.
But this one breaks the rule.
“This is the first time we’ve observed the atmosphere of a planet that is inside the orbit of a hot Jupiter. This measurement tells us this mini-Neptune indeed formed beyond the frost line,” says Saugata Barat, a postdoc in MIT’s Kavli Institute for Astrophysics and Space Research and the lead author of the study.
“This was a one-of-a-kind system,” Chelsea X. Huang, faculty at University of South Queensland, said in a media statement, explaining how such massive planets typically scatter away anything inside their orbit.
Yet in this case, a smaller mini-Neptune somehow survives closer to the star, orbiting every four days, while the hot Jupiter circles every eight.
Back in 2020, Chelsea Huang — then a Torres Postdoctoral Fellow at MIT — spotted something unusual: a mini-Neptune orbiting its star alongside an unexpected companion, a hot Jupiter.
JWST captures a crucial clue
To understand how this system formed, researchers from MIT and international institutions turned to JWST, focusing on the inner planet, TOI-1130b.
What they found was telling.
The mini-Neptune’s atmosphere is unusually “heavy,” rich in water vapour, carbon dioxide, sulfur dioxide, and traces of methane — a composition that shouldn’t exist if the planet formed close to its star.
JWST mini-Neptune study : Rethinking planet formation
That “frost line” — the region in a young star system where temperatures are low enough for ice to form — appears to be central to the story.
Scientists now believe both planets likely formed in this colder, outer region, where icy materials helped build dense atmospheres. Over time, they migrated inward together, maintaining their unusual orbital arrangement.
The findings challenge earlier assumptions that mini-Neptunes forming close to stars should have lighter atmospheres dominated by hydrogen and helium.
A system that shouldn’t exist — but does
Even observing the system was no easy task. The two planets are in what astronomers call a “mean motion resonance,” subtly tugging at each other’s orbits and making their movements harder to predict.
“It was a challenging prediction, and we had to be spot-on,” Barat said, referring to the effort required to time JWST’s observations precisely.
JWST mini-Neptune study : Why this matters
Mini-Neptunes are among the most common planets in the galaxy, yet none exist in our own solar system — making them both familiar and mysterious.
This study, appeared in Astrophysical Journal Letters, offers the clearest evidence yet that such planets can form far from their stars and migrate inward, carrying their atmospheres with them.
“This system represents one of the rarest architectures that astronomers have ever found,” Barat said in a media statement.
And in a universe full of planets, that rarity might just hold the key to understanding how many of them — including worlds very different from our own — come to be.
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