For nearly a century, dark matter has existed as a powerful idea rather than a directly observed substance, inferred from the way galaxies spin and clusters bend light but never actually seen. Now a ...

Video released by authorities offered a first glimpse at the alleged gunman who killed 2 and injured 9 in a shooting at Brown University on Saturday evening. Why is everyone talking about Paul Dano?

For the first time, astronomers say they may have caught dark matter in the act, not through its gravitational pull but by the light it could be leaving behind. A faint, carefully mapped glow of gamma ...