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Galactic Glow, Thought to Be Dark Matter, Now Hints at Hidden Pulsars
A number of high-energy anomalies raised hopes that astrophysicists had seen their first direct glimpses of dark matter. New studies suggest a different source may be responsible.
Scientists Unveil New Inventory of Universe’s Dark Contents
The first major results from the Dark Energy Survey signal the start of a new era of cosmology.
Researchers Check Space-Time to See if It’s Made of Quantum Bits
The newly developed theory of emergent gravity, proposed as an alternative to dark matter, struggles in one of its first trials.
How Superfluid Dark Matter Mimics an Old Idea About Gravity
Does the force of gravity change at large scales? Perhaps not, but a new theory of dark matter shows why that could appear to be the case.
Dark Matter Recipe Calls for One Part Superfluid
A different kind of dark matter could help to resolve an old celestial conundrum.
In the Deep, a Drive to Find Dark Matter
Elena Aprile now leads the world’s most sensitive dark-matter search. But before she could build her first detector, she had to make herself out of titanium.
The Case Against Dark Matter
A proposed theory of gravity does away with dark matter, even as new astrophysical findings challenge the need for galaxies full of the invisible mystery particles.
Off-the-Shelf Lens Assists Dark Matter Find
A camera lens often used by wildlife and sports photographers has helped astronomers learn about dark matter and galaxy formation.
Strange Dark Galaxy Puzzles Astrophysicists
The surprising discovery of a massive, Milky Way–size galaxy that is made of 99.99 percent dark matter has astronomers dreaming up new ideas about how galaxies form.