Cracking the mystery of dark matter is one of the most frustrating quests of physics.
Roughly 80 percent of the mass of the universe appears to be dark matter: an invisible material that seems to interact with ordinary matter only through gravity, without emitting light or energy. Scientists cannot detect dark matter directly and don't yet know what it's made of, but they track its influence based on the motions of stars and galaxies. The presence of dark matter is necessary to explain the universe's current structure.
Nobody has stumbled into an emergency room with an inexplicable lightsaber wound, as far as we know — and that tells us something about dark matter, a new study suggests.
Roughly 80% of the mass of the universe is made up of dark matter, a material that scientists cannot directly observe. So why do scientists think it dominates?
The secrets of the universe are so important that NASA plans spacewalk work to fix a dark matter experiment on the space station, said U.S. astronaut Jessica Meir.
There are voids in the universe, and we can't see them properly. But the good news is that astronomers just got much better at not seeing them properly.
Tiny ripples called magnons could lure even a fleeting, lightweight dark matter particle out of hiding.
We can't see it. It might not be made of normal matter. Our telescopes haven't directly detected it at all. But it sure seems like it's out there.
We now have a better idea of how big black holes were born in the early universe, a new study reports.
These tiny subatomic particles, showering down from the depths of space, continue to surprise (and annoy) physicists chasing them.
Astronomers barely know anything about dark matter, but now they know this: It behaves differently in old, dying galaxies than in new, star-forming ones.
As 2019 nears, physicists are hard at work on the next generation of dark matter detectors, and on parsing confusing data from detectors that already exist.
Stars that have been torn from their natal galaxies and now float within huge galaxy clusters can serve as dark-matter probes, a new study suggests.
A summertime sparkle seemed to hint that researchers had found dark matter, but it looks like those scientists were wrong.
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