To study what is accelerating our universe's expansion, scientists will use a new experiment that employs choreographed robots to watch millions of galaxies every 20 minutes.
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.
A new map of dark matter all over the universe could reveal things scientists don't know about dark energy.
A remarkable new image from the Hubble Space Telescope captures a close-up view of some of the most distant galaxies in the universe.
Galaxies use powerful winds to save themselves from early deaths. And researchers just spotted one from just a billion years after the Big Bang.
A new experiment in Italy will seek an unlikely particle that some scientists think could unlock the "dark sector" of our universe.
A new study validates Einstein's theory of general relativity in a distant galaxy for the first time.
Does dark matter have an electric charge? No one's really wondered before, but researchers are exploring the possibility that some dark matter particles have a small electrical charge.
Physicists speculate that decaying neutrons may be producing particles unknown to science that make up the elusive dark matter.
A measurement of the fine structure constant puts significant limitations on the existence of these dark partners to ordinary light particles.
Dark matter may actually be a scattering of primordial black holes that arose soon after the Big Bang as a result of instabilities in the Higgs field, according to a new theory.
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