The New Horizons spacecraft sailed past Pluto to the outer edge of the Solar System and found a cosmic afterglow that scientists can't explain. What is it?
Dark matter lenses, which distort and amplify light from background objects, may be more abundant in galaxy clusters than expected.
A disk galaxy in the early universe, just 1.5 billion years after the Big Bang, somehow formed during a time of chaotic cosmic conditions.
For years, scientists debated whether the glow was a telltale sign of dark matter. A new study refutes that theory, but that only deepens the mystery.
A new study deepens the mystery behind two possible detections of rare cosmic particles.
The shadowy entities are about 10,000 to 100,000 times smaller than the dark matter halo of the Milky Way.
Scientists believe that mysterious dark matter is key to forming galaxies in the cosmos. Now, a recent series of bizarre findings threatens to undermine everything we think we know.
In a new experiment, scientists probed a theory that suggests a weird interaction between two of the biggest mysteries in physics could be why our universe exists in the first place.
The faint, 12-billion-year-old signal would lead scientists to the very first stars and illuminate the origins of the modern universe, dark matter, and, well, everything.
LIGO, the observatory that detected the first gravitational wave, stretches for miles. The Levitated Sensor Detector would fit in your living room.
But news reports continue to suggest that ex-NSA hackers are helping the country hack and surveil its citizens.
Can one of Einstein’s forgotten theories solve the riddle of why 95 percent of the stuff in the universe appears to be missing?