No human, or team of humans, could possibly keep up with the avalanche of information produced by many of today’s physics and astronomy experiments. Some of them record terabytes of data every day — and the torrent is only increasing. The Square Kilometer Array, a radio telescope slated to switch on in the mid-2020s, will generate about as much data traffic each year as the entire internet.
The deluge has many scientists turning to artificial intelligence for help. With minimal human input, AI systems such as artificial neural networks — computer-simulated networks of neurons that mimic the function of brains — can plow through mountains of data, highlighting anomalies and detecting patterns that humans could never have spotted.
Of course, the use of computers to aid … Read the rest
Nancy Grace Roman, NASA’s first chief astronomer, is known as the ‘Mother of Hubble.’… Read the rest
The first black woman to go to space, Mae Jemison is now leading an effort to develop the capability for interstellar travel… Read the rest
In 1964, Ann R. McNair and Mary Jo Smith pose with a model of a Pegasus Satellite.… Read the rest
As far as anyone knows, we have always been alone. It’s just us on this pale blue dot, “home to everyone you love, everyone you know, everyone you ever heard of,” as Carl Sagan so memorably put it. No one has called or dropped by. And yet the universe is filled with stars, nearly all those stars have planets, and some of those planets are surely livable. So where is everybody?
The Italian physicist Enrico Fermi was purportedly the first to pose this question, in 1950, and scientists have offered a bounty of solutions for his eponymous paradox since. One of the most famous came from Sagan himself, with William Newman, who postulated in a 1981 paper that we just need patience. Nobody has visited because … Read the rest
Some problems in science are so hard, we don’t really know what meaningful questions to ask about them — or whether they are even truly solvable by science. Consciousness is one of those: Some researchers think it is an illusion; others say it pervades everything. Some hope to see it reduced to the underlying biology of neurons firing; others say that it is an irreducibly holistic phenomenon.
The question of what kinds of physical systems are conscious “is one of the deepest, most fascinating problems in all of science,” wrote the computer scientist Scott Aaronson of the University of Texas at Austin. “I don’t know of any philosophical reason why should be inherently unsolvable” — but “humans seem nowhere close to solving it.”
Now a new … Read the rest
For nearly a decade the US has relied on Russia to get its astronauts into space. With the test of SpaceX’s crew capsule, it looks set to bring launches home again soon… Read the rest
One of the greatest challenges of the fourth phase of Air-to-Air Background Oriented Schlieren flights, or AirBOS flight series was timing.… Read the rest
“The dawn of a new era in human spaceflight,” wrote astronaut Anne McClain. McClain had an unparalleled view from orbit of SpaceX’s Crew Dragon spacecraft as it approached the International Space Station for docking on Sunday, March 3, 2019.… Read the rest
One of the biggest and most basic questions in physics involves the number of ways to configure the matter in the universe. If you took all that matter and rearranged it, then rearranged it again, then rearranged it again, would you ever exhaust the possible configurations, or could you go on reconfiguring forever?
Physicists don’t know, but in the absence of certain knowledge, they make assumptions. And those assumptions differ depending on the area of physics they happen to be in. In one area they assume the number of configurations is finite. In another they assume it’s infinite. For now, at least, there’s no way to tell who’s right.
But over the last couple years, a select group of mathematicians and computer scientists has been busy … Read the rest