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Brown dwarfs such as “The Accident” are illuminating the murky borderlands that separate planets from stars.
Groundbreaking results show that neutron stars of different masses may have the same size — upending astrophysical models.
A new proposal would use quantum hard drives to combine the light of multiple telescopes, letting astronomers create incredibly high-resolution optical images.
For decades, astronomers debated whether a particular smudge was close-by and small, or distant and huge. A new X-ray map supports the massive option.
We don’t know why the universe appears to be expanding faster than it should. New ultra-precise distance measurements have only intensified the problem.
Once missing in action, middleweight black holes have finally been detected. Now researchers are trying to figure out how they grow from small ones.
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