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Suborbital space tourism finally arrives | FCC prepares to run public C-band auction | The big four in the U.S. launch industry — United Launch Alliance, SpaceX, Blue Origin and Northrop Grumman — hope to be one of two providers that will receive five-year contracts later this year to launch national security payloads starting in 2022. | China’s launch rate stays high | The International Space Station is the largest ever crewed object in space.

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License plates of MIT

July 22, 2024

What does your license plate say about you? In the United States, more than 9 million vehicles carry personalized “vanity” license plates, in which preferred words, digits, or phrases replace an otherwise random assignment of letters and numbers to identify a vehicle. While each state and the District of Columbia maintains its own rules about appropriate selections, creativity reigns when choosing a unique vanity plate. What’s more, the stories behind them can be just as fascinating as the people...

Startup aims to flush away the problem...

July 19, 2024

We’ve all had the unpleasant experience of walking into a bathroom to discover a messy toilet seat. Now, an MIT alumni-founded startup is working to flush away that problem forever. Cleana, co-founded by CTO Richard Li SM ’24, has developed an antibacterial, self-lifting toilet seat that promises a cleaner, more hygienic bathroom experience for all. Developing a new toilet seat is not quite as sexy as creating a fusion reactor, but Li believes in the importance of the company’s...

China-based emissions of three potent climate-warming greenhouse...

July 18, 2024

When it comes to heating up the planet, not all greenhouse gases are created equal. They vary widely in their global warming potential (GWP), a measure of how much infrared thermal radiation a greenhouse gas would absorb over a given time frame once it enters the atmosphere. For example, measured over a 100-year period, the GWP of methane is about 28 times that of carbon dioxide (CO2), and the GWPs of a class of greenhouse gases known as perfluorocarbons (PFCs) are thousands of times that of...

Machine learning unlocks secrets to advanced alloys

July 18, 2024

The concept of short-range order (SRO) — the arrangement of atoms over small distances — in metallic alloys has been underexplored in materials science and engineering. But the past decade has seen renewed interest in quantifying it, since decoding SRO is a crucial step toward developing tailored high-performing alloys, such as stronger or heat-resistant materials. Understanding how atoms arrange themselves is no easy task and must be verified using intensive lab experiments or computer simulations based on imperfect models....

Creating and verifying stable AI-controlled systems in...

July 18, 2024

Neural networks have made a seismic impact on how engineers design controllers for robots, catalyzing more adaptive and efficient machines. Still, these brain-like machine-learning systems are a double-edged sword: Their complexity makes them powerful, but it also makes it difficult to guarantee that a robot powered by a neural network will safely accomplish its task. The traditional way to verify safety and stability is through techniques called Lyapunov functions. If you can find a Lyapunov function whose value consistently...

Collaborative effort supports an MIT resilient to...

July 17, 2024

Warmer weather can be a welcome change for many across the MIT community. But as climate impacts intensify, warm days are often becoming hot days with increased severity and frequency. Already this summer, heat waves in June and July brought daily highs of over 90 degrees Fahrenheit. According to the Resilient Cambridge report published in 2021, from the 1970s to 2000, data from the Boston Logan International Airport weather station reported an average of 10 days of 90-plus temperatures each year....

Astronomers spot a highly “eccentric” planet on...

July 17, 2024

Hot Jupiters are some of the most extreme planets in the galaxy. These scorching worlds are as massive as Jupiter, and they swing wildly close to their star, whirling around in a few days compared to our own gas giant’s leisurely 4,000-day orbit around the sun. Scientists suspect, though, that hot Jupiters weren’t always so hot and in fact may have formed as “cold Jupiters,” in more frigid, distant environs. But how they evolved to be the star-hugging gas...

AI method radically speeds predictions of materials’...

July 16, 2024

It is estimated that about 70 percent of the energy generated worldwide ends up as waste heat. If scientists could better predict how heat moves through semiconductors and insulators, they could design more efficient power generation systems. However, the thermal properties of materials can be exceedingly difficult to model. The trouble comes from phonons, which are subatomic particles that carry heat. Some of a material’s thermal properties depend on a measurement called the phonon dispersion relation, which can be...

How to assess a general-purpose AI model’s...

July 16, 2024

Foundation models are massive deep-learning models that have been pretrained on an enormous amount of general-purpose, unlabeled data. They can be applied to a variety of tasks, like generating images or answering customer questions. But these models, which serve as the backbone for powerful artificial intelligence tools like ChatGPT and DALL-E, can offer up incorrect or misleading information. In a safety-critical situation, such as a pedestrian approaching a self-driving car, these mistakes could have serious consequences. To help prevent...

Professor Emeritus John Vander Sande, microscopist, entrepreneur,...

July 15, 2024

MIT Professor Emeritus John B. Vander Sande, a pioneer in electron microscopy and beloved educator and advisor known for his warmth and empathetic instruction, died June 28 in Newbury, Massachusetts. He was 80. The Cecil and Ida Green Distinguished Professor in the Department of Materials Science and Engineering (DMSE), Vander Sande was a physical metallurgist, studying the physical properties and structure of metals and alloys. His long career included a major entrepreneurial pursuit, launching American Superconductor; forming international academic...

Polina Anikeeva named head of the Department...

July 15, 2024

Polina Anikeeva PhD ’09, the Matoula S. Salapatas Professor at MIT, has been named the new head of MIT’s Department of Materials Science and Engineering (DMSE), effective July 1. “Professor Anikeeva’s passion and dedication as both a researcher and educator, as well as her impressive network of connections across the wider Institute, make her incredibly well suited to lead DMSE,” says Anantha Chandrakasan, chief innovation and strategy officer, dean of engineering, and Vannevar Bush Professor of Electrical Engineering and...

MIT OpenCourseWare “changed how I think about...

July 15, 2024

Bernardo Picão has been interested in online learning since the early days of YouTube, when his father showed him a TED Talk. But it was with MIT Open Learning that he realized just how transformational digital resources can be. “YouTube was my first introduction to the idea that you can actually learn stuff via the internet,” Picão says. “So, when I became interested in mathematics and physics when I was 15 or 16, I turned to the internet and...

Q&A: Helping young readers explore curiosity about...

July 15, 2024

It’s no secret that children love rocks: playing on them, stacking them, even sneaking them home in pockets. This universal curiosity about the world around us is what inspires psychotherapist and author Lisa Varchol Perron when writing books for young readers. While in talks with publishers, an editor asked if she’d be interested in co-authoring a book with her husband, Cecil and Ida Green Professor of Earth, Atmospheric and Planetary Sciences Taylor Perron. The result was the picture book “All the Rocks...

Q&A: What past environmental success can teach...

July 12, 2024

Susan Solomon, MIT professor of Earth, atmospheric, and planetary sciences (EAPS) and of chemistry, played a critical role in understanding how a class of chemicals known as chlorofluorocarbons were creating a hole in the ozone layer. Her research was foundational to the creation of the Montreal Protocol, an international agreement established in the 1980s that phased out products releasing chlorofluorocarbons. Since then, scientists have documented signs that the ozone hole is recovering thanks to these measures. Having witnessed this historical process...

Marking a milestone: Dedication ceremony celebrates the...

July 12, 2024

The MIT Stephen A. Schwarzman College of Computing recently marked a significant milestone as it celebrated the completion and inauguration of its new building on Vassar Street with a dedication ceremony. Attended by members of the MIT community, distinguished guests, and supporters, the ceremony provided an opportunity to reflect on the transformative gift that initiated the biggest change to MIT’s institutional structure in over 70 years. The gift, made by Stephen A. Schwarzman, the chair, CEO, and co-founder of Blackstone,...

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