Tag: Astrophysics

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Stars around the Milky Way: Cosmic space invaders or victims of galactic eviction?

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An international team of astronomers led by the Max Planck Institute for Astronomy (MPIA) has made a surprising discovery about the birthplace of groups of stars …

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Where Gravity Is Weak and Naked Singularities Are Verboten

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Physicists have wondered for decades whether infinitely dense points known as singularities can ever exist outside black holes, which would expose the mysteries of quantum gravity …

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Astronomers discover S0-2 star is single and ready for big Einstein test

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Astronomers have the “all-clear” for an exciting test of Einstein’s Theory of General Relativity, thanks to a new discovery about S0-2’s star status. The orbit of …

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There Are Two Types of Time Travel, and Physicists Agree That at Least One of Them Is Possible

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Brian Greene, professor of physics and mathematics at Columbia University and co-founder of the World Science Festival, explains what we know about time travel so far. …

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Some black holes erase your past

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In the real world, your past uniquely determines your future. If a physicist knows how the universe starts out, she can calculate its future for all …

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No relation between a supermassive black hole and its host galaxy!?

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Using the Atacama Large Millimeter/submillimeter Array (ALMA) to observe an active galaxy with a strong ionized gas outflow from the galactic center, a team led by …

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'Ultramassive' black holes discovered in far-off galaxies

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Thanks to data collected by NASA’s Chandra X-ray telescope on galaxies up to 3.5 billion light years away from Earth, an international team of astrophysicists was …