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An 8th Planet Is Found Orbiting a Distant Star, With A.I.’s Help - The New York Times
A Google neural network analyzed data collected by NASA and helped astronomers detect another planet around a star some 2,500 light years away.
astronomy  ai 
13 hours ago by geetarista
Astronomers to Check Mysterious Interstellar Object for Signs of Technology - The Atlantic
Russian billionaire Yuri Milner says if the space rock 'Oumuamua is giving off radio signals, his team will be able to detect them—and they may get the results within days.
The email about “a most peculiar object” in the solar system arrived in Yuri Milner’s inbox last week.
Milner, the Russian billionaire behind Breakthrough Listen, a $100 million search for intelligent extraterrestrial life, had already heard about the peculiar object. ‘Oumuamua barreled into view in October, the first interstellar object seen in our solar system.
Astronomers around the world chased after the mysterious space rock with their telescopes, collecting as much data as they could as it sped away. Their observations revealed a truly unusual object with puzzling properties. Scientists have long predicted an interstellar visitor would someday coast into our corner of the universe, but not something like this.
astronomy  space 
yesterday by rgl7194
The Telescope in the Ice by Mark Bowen
"The Telescope in the Ice is about the building of IceCube, which Scientific American has called the "weirdest" of the seven wonders of modern astronomy. It's the inside story of the people who built the instrument, the mistakes they made, the blind alleys they went down, the solutions they found, their conflicts, and their teamwork. It's a success story.
"Located at the U. S. Amundsen-Scott Research Station at the geographic South Pole, IceCube is unlike most telescopes in that it is not designed to detect light. It employs a cubic kilometer of diamond-clear ice, more than a mile beneath the surface, to detect an elementary particle known as the neutrino. In 2010, it detected the first extraterrestrial high-energy neutrinos and thus gave birth to a new field of astronomy.
"Aside from being a telescope, IceCube is the largest particle physics detector ever built. Its scientific goals span not only astrophysics and cosmology but also pure particle physics. And since the neutrino is one of the strangest and least understood of the known elementary particles, this is fertile ground. Neutrino physics is perhaps the most active field in particle physics today, and IceCube is at this forefront.
"The book is mainly about people and the thrill of the chase: the struggle to understand the neutrino ever since it was "invented" by the extraordinary Wolfgang Pauli in 1930, the early researchers who helped understand it, the strange things it taught them about the nature of space and time, and the pioneers and inventors of neutrino astronomy."

--- I knew people who were working on this in grad school!
to:NB  books:noted  astronomy  physics  popular_science  neutrinos  antarctica 
yesterday by cshalizi
Alien Probe or Galactic Driftwood? SETI Tunes In to 'Oumuamua
Ever since its discovery in mid-October as it passed by Earth already outbound from our solar system, the mysterious object dubbed ‘Oumuamua (Hawaiian for “first messenger”) has left scientists utterly perplexed. Zooming down almost perpendicularly inside Mercury’s orbit at tens of thousands of kilometers per hour—too fast for our star’s gravity to catch—‘Oumuamua appeared to have been dropped in on our solar system from some great interstellar height, picking up even more speed on a slingshot-like loop around the sun before soaring away for parts unknown. It is now already halfway to Jupiter, too far for a rendezvous mission and rapidly fading from the view of Earth’s most powerful telescopes.

Astronomers scrambling to glimpse the fading object have revealed additional oddities. ‘Oumuamua was never seen to sprout a comet-like tail after getting close to the sun, hinting it is not a relatively fresh bit of icy flotsam from the outskirts of a nearby star system. This plus its deep red coloration—which mirrors that of some cosmic-ray-bombarded objects in our solar system—suggested that ‘Oumuamua could be an asteroid from another star. Yet those same observations also indicate ‘Oumuamua might be shaped rather like a needle, up to 800 meters long and only 80 wide, spinning every seven hours and 20 minutes. That would mean it is like no asteroid ever seen before, instead resembling the collision-minimizing form favored in many designs for notional interstellar probes. What’s more, it is twirling at a rate that could tear a loosely-bound rubble pile apart. Whatever ‘Oumuamua is, it appears to be quite solid—likely composed of rock, or even metal—seemingly tailor-made to weather long journeys between stars. So far there are few if any wholly satisfactory explanations as to how such an extremely elongated solid object could naturally form, let alone endure the forces of a natural high-speed ejection from a star system—a process thought to involve a wrenching encounter with a giant planet.
astronomy  nearearthobjects 
3 days ago by campylobacter
Two Stars Collided And Solved Half of Astronomy's Problems. Now What? - Slashdot
"It's hard to overstate the enormous leap forward that astronomy took on August 17, 2017," reports an article shared by schwit1:
On that day, astronomers bore witness to the titanic collision of two neutron stars, the densest things in the universe besides black holes. In the collision's wake, astronomers answered multiple major questions that have dominated their field for a generation. They solved the origin of gamma-ray bursts, mysterious jets of hardcore radiation that could potentially roast Earth. They glimpsed the forging of heavy metals, like gold and platinum. They measured the rate at which the expansion of the universe is accelerating. They caught light at the same time as gravitational waves, confirmation that waves move at the speed of light. And there was more, and there is much more yet to come from this discovery... "Now it's a question of, do we have the right instrumentation for doing all the follow-up work?" said Edo Berger, an astronomer at Harvard who studies explosive cosmic events. "Do we have the right telescopes? What's going to happen when we have not just one event, but one a month, or one a week -- how do we deal with that flood...?"
slashdot  stars  Astronomy  science  Gravity 
4 days ago by gardencat
The Best Telescopes for Beginners: Wirecutter Reviews | A New York Times Company
The Best Telescopes for Beginners - Added July 09, 2017 at 05:27PM
astronomy  gear  nerd 
4 days ago by xenocid - Telescope documentation
Random tips for a telescope I don't have, but is not dissimilar from mine
telescope  astronomy 
5 days ago by jbm

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