Space
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How a particle may stand still in rotating spacetime | Lisa Zyga
When a particle with a certain angular momentum is located at the critical distance rst, it remains at rest while the spacetime is rotating around it. The closer a particle is to this critical ...
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Earth's orbital changes have influenced climate, life forms for at least 215 million years | Dennis V. Kent
Within ancient rocks in Arizona's Petrified Forest National Park, scientists have identified signs of a regular variation in Earth's orbit that influences climate. Here, one of the authors near the ...
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Kepler spacecraft nearing the end as fuel runs low | Charlie Sobeck
Credit: NASA March 14, 2018 (Phys.org) -- Trailing Earth's orbit at 94 million miles away, the Kepler space telescope has survived many potential knock-outs during its nine years in flight, from ...
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Scientists use NASA data to study link between solar storms and animal beachings | Lina Tran
Illustration of an Atlantic White-sided Dolphin and a Long-finned Pilot Whale, two marine mammal species that strand in Cape Cod. Credit: NASA GSFC/CIL/Brian Monroe Dec. 8, 2017 (Phys.org) -- The ...
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Physicist explores the possibility of vestiges of a universe previous to the Big Bang | Peter Moon
Physicist publishes paper in General Relativity and Gravitation proposing to eliminate need for cosmological spacetime singularity and arguing that the current expansion phase was preceded by ...
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Aliens may be more like us than we think | Sam Levin
Picture an alien. These illustrations represent different levels of adaptive complexity we might imagine when thinking about aliens. (a) A simple replicating molecule, with no apparent design. This ...
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Astronomers capture first visiting object from outside our solar system | Alan Fitzsimmons
Credit: Queen's University Belfast Oct. 27, 2017 (Phys.org) -- A Queen's University Belfast scientist is leading an international team in studying a new visitor to our solar system -- the first ...
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Small asteroid or comet 'visits' from beyond the solar system | Rob Weryk
A/2017 U1 is most likely of interstellar origin. Approaching from above, it was closest to the Sun on Sept. 9. Traveling at 27 miles per second (44 kilometers per second), the comet is headed away ...
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Artificial intelligence finds 56 new gravitational lens candidates | Carlo Enrico Petrillo
This picture shows a sample of the handmade photos of gravitational lenses that the astronomers used to train their neural network. Credit: Enrico Petrillo, University of Groningen Oct. 23, 2017 ...
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Neutron star smashup seen for first time, 'transforms' understanding of Universe | Benoit Mours
This artist's impression shows two tiny but very dense neutron stars at the point at which they merge and explode as a kilonova. Such a very rare event is expected to produce both gravitational ...
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The Terror of Deep Time | John Michael Greer
Image: Future World Music - New Beginnings. YouTube. youtu.be/2k61ORGZ8h8 Sept. 209, 2017 (EcoSophia.net) -- Back in the 1950s, sociologist C. Wright Mills wrote cogently about what he called ...
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