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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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Field campaign assesses vulnerabilities of 5G networks

August 7, 2023

Fifth-generation, or 5G, mobile network technology is all the hype these days. Compared to 4G, this newest way of connecting wireless devices to cellular networks is designed to provide higher data rates, ultralow latency, improved reliability, expanded configurability, increased network capacity and availability, and connectivity among a larger number of users. The U.S. Department of Defense (DoD) would like to leverage these commercial advances in their communications systems, but 5G, like its predecessors, lacks sufficiently robust security features. For...

Wolfgang Ketterle receives Vannevar Bush Faculty Fellowship

August 7, 2023

MIT professor of physics Wolfgang Ketterle was named one of 10 recipients of the 2023 Class of Vannevar Bush Faculty Fellowships by the U.S. Department of Defense (DoD). Ketterle will use his award of up to $3 million over five years for his research into quantum science with ultracold atoms on a 50-nanometer scale. “With the Vannevar Bush faculty fellowship’s generous and flexible funding, I can explore a new direction of research,” says Ketterle, the John D. MacArthur Professor...

Using social media to raise awareness of...

August 7, 2023

The Covid-19 pandemic created a global increase in domestic violence against women. Now, an MIT-led experiment designed with that fact in mind shows that some forms of social media can increase awareness among women about where to find resources and support for addressing domestic violence. In the randomized experiment, set in Egypt, women recruited via Facebook were sent videos via social media as well as reminders to watch television programming from a well-known Egyptian human rights lawyer focused on...

Q&A: Alexey Makarin on why social media...

August 4, 2023

It’s the height of summer break, and as students decompress from the school year, they also have more time for scrolling social media. What effect do these platforms have on the young people’s mental health? In late May, the U.S. Surgeon General Vice Admiral Vivek H. Murthy published an advisory report on the subject, noting the “unprecedented” challenges faced by today’s youth in navigating social media, and emphasizing the “alarming” effects social media can have on many people. The...

A cool path to disease deceleration

August 4, 2023

In 2020, Kathrin “Kat” Kajderowicz’s father passed away from lung cancer. Kajderowicz was in charge of her father’s health care for as long as she can remember. While he suffered from various cardiovascular issues for several years, it wasn’t until the beginning of the Covid-19 pandemic that he was diagnosed with late-stage metastatic small-cell lung cancer. Jumping into a primary caregiver position, she closely monitored the treatments he received from doctors to no avail. “I was frustrated with the...

Study finds a surprising new role for...

August 3, 2023

A signaling protein known as STING is a critical player in the human immune system, detecting signs of danger within cells and then activating a variety of defense mechanisms. STING is primarily on the lookout for DNA, which can indicate either a foreign invader such as a virus or damage to the host tissue or cell. When STING detects that danger signal, it can turn on at least three different pathways — one leading to interferon production, one to...

Newly discovered bacterial communication system aids antimicrobial...

August 2, 2023

Researchers have discovered a new stress signaling system that enables bacteria cells to adapt and protect themselves against the immune system and certain antibiotics. An enzyme, RlmN, was observed to directly sense chemical and environmental stresses, and rapidly signal for the production of other proteins that allow the bacteria cell to adapt and survive. This breakthrough discovery of RlmN as a stress sensor has revealed a new mechanism of antimicrobial resistance that can be targeted for drug development. The...

Sensing and controlling microscopic spin density in...

August 2, 2023

Electronic devices typically use the charge of electrons, but spin — their other degree of freedom — is starting to be exploited. Spin defects make crystalline materials highly useful for quantum-based devices such as ultrasensitive quantum sensors, quantum memory devices, or systems for simulating the physics of quantum effects. Varying the spin density in semiconductors can lead to new properties in a material — something researchers have long wanted to explore — but this density is usually fleeting and...

New method simplifies the construction process for...

August 2, 2023

Engineers are constantly searching for materials with novel, desirable property combinations. For example, an ultra-strong, lightweight material could be used to make airplanes and cars more fuel-efficient, or a material that is porous and biomechanically friendly could be useful for bone implants. Cellular metamaterials — artificial structures composed of units, or cells, that repeat in various patterns — can help achieve these goals. But it is difficult to know which cellular structure will lead to the desired properties. Even...

MIT engineers create an energy-storing supercapacitor from...

July 31, 2023

Two of humanity’s most ubiquitous historical materials, cement and carbon black (which resembles very fine charcoal), may form the basis for a novel, low-cost energy storage system, according to a new study. The technology could facilitate the use of renewable energy sources such as solar, wind, and tidal power by allowing energy networks to remain stable despite fluctuations in renewable energy supply. The two materials, the researchers found, can be combined with water to make a supercapacitor — an...

Using AI to protect against AI image...

July 31, 2023

As we enter a new era where technologies powered by artificial intelligence can craft and manipulate images with a precision that blurs the line between reality and fabrication, the specter of misuse looms large. Recently, advanced generative models such as DALL-E and Midjourney, celebrated for their impressive precision and user-friendly interfaces, have made the production of hyper-realistic images relatively effortless. With the barriers of entry lowered, even inexperienced users can generate and manipulate high-quality images from simple text descriptions —...

A wearable ultrasound scanner could detect breast...

July 28, 2023

When breast cancer is diagnosed in the earliest stages, the survival rate is nearly 100 percent. However, for tumors detected in later stages, that rate drops to around 25 percent. In hopes of improving the overall survival rate for breast cancer patients, MIT researchers have designed a wearable ultrasound device that could allow people to detect tumors when they are still in early stages. In particular, it could be valuable for patients at high risk of developing breast cancer...

The philosophical side of cinema

July 27, 2023

What makes a movie sad? Is there even such a thing as a sad movie? Those are the questions students explored during a meeting of class 24.213 (Philosophy of Film), an MIT course offered this spring by associate professor of philosophy Justin Khoo. On this particular afternoon, the case study was “Eternal Sunshine of the Spotless Mind,” a 2003 film starring Jim Carrey and Kate Winslet in which the characters are able to erase the painful memories of their...

Making sense of cell fate

July 27, 2023

Despite the proliferation of novel therapies such as immunotherapy or targeted therapies, radiation and chemotherapy remain the frontline treatment for cancer patients. About half of all patients still receive radiation and 60-80 percent receive chemotherapy. Both radiation and chemotherapy work by damaging DNA, taking advantage of a vulnerability specific to cancer cells. Healthy cells are more likely to survive radiation and chemotherapy since their mechanisms for identifying and repairing DNA damage are intact. In cancer cells, these repair mechanisms...

How forests can cut carbon, restore ecosystems,...

July 27, 2023

To limit the frequency and severity of droughts, wildfires, flooding, and other adverse consequences of climate change, nearly 200 countries committed to the Paris Agreement’s long-term goal of keeping global warming well below 2 degrees Celsius. According to the latest United Nations Intergovernmental Panel on Climate Change (IPCC) Report, achieving that goal will require both large-scale greenhouse gas (GHG) emissions reduction and removal of GHGs from the atmosphere. At present, the most efficient and scalable GHG-removal strategy is the...

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