Every year, the fair draws in third- through 12th-grade students from across the valley, challenging them to explore an array ...

For decades, astronomers wondered why most nearby galaxies are speeding away from the Milky Way instead of being pulled in by its gravity. New simulations reveal the answer: our galaxy sits in a ...

Astronomers produce the most complete map of the center of the Milky Way, which can provide insight into how stars and planets are formed.

When black holes collide, the crash generates ripples in the fabric of spacetime—gravitational waves. These distortions ...

When the densest objects in the universe collide and merge, the violence sets off ripples, in the form of gravitational waves ...