On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star, dubbed M31-V1, was key to showing that the universe extended far beyond ...

The gravitational lensing that causes this rare phenomenon cannot be explained solely by looking at observable objects—suggesting that dark matter had a hand in its formation.

Deep beneath South Dakota, scientists are closing in on one of the greatest mysteries in the universe — the true nature of dark matter. Using the world’s most sensitive detector, the LUX-ZEPLIN experi ...

The James Webb Space Telescope (JWST) has discovered phosphine in the atmosphere of a brown dwarf — the same chemical that stoked controversy following claims that it had been detected on Venus and ...