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Astroscale's technology uses magnets to gather up space waste. But a report on the Origin Space website says NEO-01 will...
13/06/2022

Astroscale's technology uses magnets to gather up space waste. But a report on the Origin Space website says NEO-01 will use a net to capture waste and then burn it.

Thousands of satellites have been launched worldwide. As they outlive their use, many end up as waste and put other operating satellites at risk.

Su Meng is the founder of Origin Space. He said the company plans to launch many space telescopes and more spacecraft to begin the first for-profit mining of asteroids by 2045.

The Xinhua news agency reported that China was increasing efforts to land a spacecraft on a near-Earth asteroid to collect materials. China is also speeding up a plan to build a defense system against near-Earth asteroids.

The state-run Xinhua news agency recently reported that the robot launched on the government's Long March 6 rocket along...
13/06/2022

The state-run Xinhua news agency recently reported that the robot launched on the government's Long March 6 rocket along with several satellites. The robot will also investigate deep space to observe small objects in the universe.

The 30-kilogram robot, called NEO-01, was developed by Origin Space. The company says the robot will lead the way for future technologies capable of mining on asteroids.

The world's first asteroid mining company, Planetary Resources, was established in 2009. Since then, more than 12 businesses around the world have entered the industry, including 3D Systems of the United States and Japan's Astroscale.

While these physicists and their colleagues have studied ultracold atoms on Earth for decades, the planet’s gravity stil...
10/06/2022

While these physicists and their colleagues have studied ultracold atoms on Earth for decades, the planet’s gravity still tugs on the atoms, even though it’s nature’s weakest force. On the ground, if scientists try nudging the atoms into a round blob or bubble, they end up drooping, creating a concave shape more like a little contact lens. That hasn’t stopped researchers from manipulating them into other shapes, like needles, rings, and pancakes. (The geometry of atoms can matter, since an ultrathin layer of carbon can be made into graphene, for example.) But to make bubbles of ultracold gas atoms that stay spherical or ellipsoidal and don’t flatten out, they had to take gravity out of the picture. That’s where the ISS came in.

Lundblad and Aveline’s supercool experiment is just one within the Cold Atom Lab, or CAL. Unlike a research lab at a university, CAL contains hardware that enables six teams to perform a variety of experiments, sort of like a kitchen where groups of cooks can come in to make use of the ingredients and tools to prepare their own dishes. Once astronauts installed the lab, it was able to run on its own, requiring no monitoring or assistance by ISS crew. (It can occasionally be repaired or improved, like when NASA astronauts Christina Koch and Jessica Meir conducted an upgrade in 2020.)

At such extremely frigid temperatures, the atoms start acting weirdly. They coalesce into a substance with quantum prope...
10/06/2022

At such extremely frigid temperatures, the atoms start acting weirdly. They coalesce into a substance with quantum properties, behaving both as particles and as waves. At that point, they’re basically a quantum paradox and almost like a new state of matter, called a Bose-Einstein condensate, named after the Indian and German physicists from a century ago. (Technically, the ultracold atoms need to be cooled even further to be considered a Bose-Einstein condensate, but they’re showing signs of being on the cusp of that.) In any case, while quantum phenomena usually need powerful microscopes to be observed, these bubbles can be inflated to a size much bigger than the width of a human hair.

“We’re taking neat physics effects that normally happen at the scale of atoms, and we’re making them happen in objects that are up to a millimeter in size, trying to make quantum mechanics and strange physics behavior visible to the naked eye,” says Nathan Lundblad, an atomic physicist at Bates College in Maine and lead author of the study.

She’d turn to them whenever she was struggling with a homework problem or needed a friendly face. When she told her acad...
08/06/2022

She’d turn to them whenever she was struggling with a homework problem or needed a friendly face. When she told her academic adviser she was considering a master’s degree, he encouraged her to reach higher. (That adviser, incidentally, was a white man whose efforts helped Stanford, over the next three decades, produce numerous Black American physicists with PhDs.)

Five years later, Greene-Johnson returned to the Midwest to begin graduate school at UChicago. There were two other women in her class, both white. No other Black grad students were in the department, despite the university’s being situated in the city’s historically Black South Side.

One day Venters was sitting in the waiting lounge for an upcoming appointment with the physical sciences dean. His admin...
08/06/2022

One day Venters was sitting in the waiting lounge for an upcoming appointment with the physical sciences dean. His administrative assistant, a Black woman, suddenly asked her: “Are you the first from your department?” Embarrassed, Venters mumbled that she did not know. The question had often popped into her mind, but she had always pushed it aside. In this space, she’d tell herself, you just don’t go there about race.

But race—and gender, for that matter—were the unavoidable subtexts. To Venters, the criticism seemed relentless. There was always something she didn’t say, know, or do well enough. By the time of her dissertation defense, she had all but given up trying to prove herself. It doesn’t matter how well I do, she thought, these people are not going to be satisfied. But she got through it. She passed, and in 2009 she earned her PhD.

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