theory of relativity
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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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Hear the Sound of a Black Hole ‘Echo’
Using a new tool they nicknamed the “Reverberation Machine,” researchers have detected eight echoing black hole binaries in the Milky Way. They then converted those X-ray echoes into sound waves, which you can listen to in the video below.
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Physicists Think They have Spotted a Very Rare Black Hole
On August 30, 1995, 10-billion-year-old light from the early universe finally hit the Compton Gamma-ray Observatory, which was circling in Earth orbit. An Australian research team is now reporting that the gamma-ray burst contained evidence of an exceedingly rare intermediate-mass black hole, the sort that would help fill a hole in our understanding of these…
