black hole
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Astronomers Discover Heaviest Stellar Black Hole in the Milky Way
The black hole lurks just 2,000 light-years away in the constellation Aquila.
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These Violent Collisions Could Be Producing Dark Matter
A collision of two extraordinarily dense, collapsed stars in the distant universe is providing potential clues to the axion, a dark matter candidate first proposed half a century ago. The stellar remnants are neutron stars, the corpses that remain after massive stars collapse in on themselves. These dead stars are so dense that their electrons…
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Nesting Doll Stars Proposed as Solution to General Relativity
If you asked an astrophysicist what is yet to be discovered in the universe, there’s a good chance they’d paraphrase Donald Rumsfeld: It’s full of known unknowns. Besides the regular matter and energy we know and love, the universe is also composed of two big mysteries: dark energy and dark matter. Theoretical astrophysicists aim to…
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Hell Yeah, We’re Getting a Space-Based Gravitational Wave Observatory
Stay calm, everybody stay calm. But it’s finally happening: The European Space Agency is committing itself to the Laser Interferometer Space Antenna (LISA), a gravitational wave observatory that will study some of the universe’s most enigmatic phenomena. On Thursday, LISA was formally adopted, meaning that ESA “recognises that the mission concept and technology are sufficiently…