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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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New type of atomic clock keeps time...

December 16, 2020

Atomic clocks are the most precise timekeepers in the world. These exquisite instruments use lasers to measure the vibrations of atoms, which oscillate at a constant frequency, like many microscopic pendulums swinging in sync. The best atomic clocks in the world keep time with such precision that, if they had been running since the beginning of the universe, they would only be off by about half a second today. Still, they could be even more precise. If atomic clocks...

Ultracold atoms reveal a new type of...

December 16, 2020

A new study illuminates surprising choreography among spinning atoms. In a paper appearing today in the journal Nature, researchers from MIT and Harvard University reveal how magnetic forces at the quantum, atomic scale affect how atoms orient their spins. In experiments with ultracold lithium atoms, the researchers observed different ways in which the spins of the atoms evolve. Like tippy ballerinas pirouetting back to upright positions, the spinning atoms return to an equilibrium orientation in a way that depends...

“My whole heart is in that job”

December 16, 2020

It was 9 p.m. on a Monday night during the spring of his first year at MIT. To Jack-William Barotta, this meant one thing — Physics Day. He had just taken on a tutoring role in the Office of Minority Education’s Talented Scholars Resource Room (TSR^2), and was sitting patiently in the classroom, waiting to tutor any students who arrived with questions. Eventually, a student came up to him frustrated with a problem set. Jack-William had never seen the...

Four astronauts with ties to MIT named...

December 15, 2020

On Dec. 9, NASA announced a group of 18 astronauts to form the newly-established Artemis team, including three alumni from the MIT Department of Aeronautics and Astronautics and a former research fellow from the Whitehead Institute. Raja Chari SM ’01, Jasmin Moghbeli ’05, Warren “Woody” Hoburg ’08, and Kate Rubins will help tackle the preparations necessary for early moon missions to help establish a modern lunar exploration program. Under the Artemis program, NASA will land the first woman...

Evelyn Hu delivers 2020 Dresselhaus Lecture on...

December 15, 2020

Harvard University Professor Evelyn Hu opened the 2020 Mildred S. Dresselhaus Lecture with a question: In an imperfect world, is perfection a necessary precursor for transformative advances in science and engineering? Over the course of the next hour, for a virtual audience of nearly 300, the Tarr-Coyne Professor of Applied Physics and Electrical Engineering at the John A. Paulson School of Engineering and Applied Sciences at Harvard University argued that, at the nanoscale, there must be more creative ways...

Weathering the storm

December 15, 2020

Professors Colette Heald and Gene-Wei Li have been honored as “Committed to Caring” for crafting inclusive laboratory environments, as well as continually empowering their students. A hurdle like the Covid-19 pandemic can easily throw student well-being and research off-kilter. Having such caring advisors can help students persevere amid uncertainty. Colette Heald: an inspirational advocate Colette Heald is a professor in the Department of Civil and Environmental Engineering as well as a professor of earth, atmospheric, and planetary sciences. Through...

Multimillion-dollar grant to MIT funds research into...

December 15, 2020

Despite the fact that Lyme disease is the most common vector-borne disease in the United States, with more than 400,000 new cases every year, there are no consistently accurate tests for Lyme. Known in the medical community as “the great imitator,” Lyme disease can be challenging to diagnose as many of its symptoms, such as fatigue, disrupted sleep, brain fog, and joint and body pain, also occur with other diseases. As a result, Lyme victims are frequently misdiagnosed and researchers still don’t understand why 10-20 percent of Lyme patients remain sick,...

MIT oceanographers have an explanation for the...

December 15, 2020

Eddies are often seen as the weather of the ocean. Like large-scale circulations in the atmosphere, eddies swirl through the ocean as slow-moving sea cyclones, sweeping up nutrients and heat, and transporting them around the world. In most oceans, eddies are observed at every depth and are stronger at the surface. But since the 1970s, researchers have observed a peculiar pattern in the Arctic: In the summer, Arctic eddies resemble their counterparts in other oceans, popping up throughout the...

Making data-informed Covid-19 testing plans

December 15, 2020

Warehouses, manufacturing floors, offices, schools — organizations of all kinds have had to change their operations to adapt to life in a pandemic. By now, there is confidence in some ways to help mitigate Covid-19 spread: contact tracing, distancing and quarantining, ventilation, mask wearing. And there is one scientific tool that can play a critical role: testing. Implementing testing within an organization raises a number of questions. Who should be tested? How often? How do other mitigation efforts impact...

Building machines that better understand human goals

December 14, 2020

In a classic experiment on human social intelligence by psychologists Felix Warneken and Michael Tomasello, an 18-month old toddler watches a man carry a stack of books towards an unopened cabinet. When the man reaches the cabinet, he clumsily bangs the books against the door of the cabinet several times, then makes a puzzled noise. Something remarkable happens next: the toddler offers to help. Having inferred the man’s goal, the toddler walks up to the cabinet and opens its...

“SCOUT” helps researchers find, quantify significant differences...

December 14, 2020

The ability to culture cerebral organoids, or “minibrains,” using stem cells derived from people has given scientists experimentally manipulable models of human neurological development and disease, but not without confounding challenges. No two organoids are alike and none of them resemble actual brains. This “snowflake” problem has held back the science by making scientifically meaningful quantitative comparisons difficult to achieve. To help researchers overcome those limitations, MIT neuroscientists and engineers have developed a new pipeline for clearing, labeling, 3D...

For cultural and political conflicts, a humanizing...

December 14, 2020

Growing up in the suburbs of Chicago, Nasir Almasri heard so many discussions about the political struggles of Palestinians that by the time he was 7, he thought he’d heard enough to last a lifetime. He was wrong. Decades later, Almasri is now in his fourth year in the MIT political science PhD program pursuing answers to thorny political questions around authoritarian regimes and opposition groups — scholarship with deep roots in the dinner-table conversations of his childhood. In...

Q&A: Holly Jackson on building a cosmic...

December 14, 2020

Holly Jackson doesn’t think of herself as an astronomer, but her work has contributed to some of the most startling and original research in the field this century. A junior majoring in electrical engineering and computer science, Jackson has become a valued member of Professor Paula Jofré’s research team in the astronomy department at Diego Portales University in Santiago, Chile. As a participant in MISTI, MIT’s international internship program, Jackson traveled to Santiago in 2019, well before the Covid-19...

An LED that can be integrated directly...

December 14, 2020

Light-emitting diodes — LEDs — can do way more than illuminate your living room. These light sources are useful microelectronics too. Smartphones, for example, can use an LED proximity sensor to determine if you’re holding the phone next to your face (in which case the screen turns off). The LED sends a pulse of light toward your face, and a timer in the phone measures how long it takes that light to reflect back to the phone, a proxy...

Model could help determine quarantine measures needed...

December 14, 2020

Some of the research described in this article has been published on a preprint server but has not yet been peer-reviewed by experts in the field. As Covid-19 infections soar across the U.S., some states are tightening restrictions and reinstituting quarantine measures to slow the virus’ spread. A model developed by MIT researchers shows a direct link between the number of people who become infected and how effectively a state maintains its quarantine measures. The researchers described their model...

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