Cosmology

Decades of confounding experiments have physicists considering a startling possibility: the universe might not make sense

This summer's best fireworks may take place at the center of our galaxy

A new mission propels detailed investigations of exoplanets

The Hubble Space Telescope is giving astronomers a glimpse into the universe's early tumultuous era of galaxy formation

Catch a live webcast of the moon as it grazes the outermost layer of Earth's shadow

Astronomers caught a glimpse of two star-forming galaxies as they collided 11 billion light-years away. The smashup could eventually produce one giant elliptical galaxy, researchers say

The black hole has a troublesome sibling, the naked singularity. Physicists have long thought—hoped—it could never exist. But could it?

Maybe not. The observations that led astronomers to deduce its existence could have another explanation: our galaxy lies at the center of a giant cosmic void

Dark matter is not just a puzzle. It is a solution

A preliminary analysis from the IceCube detector reveals more than two dozen neutrinos of unknown origin

The mountains of the moon, formed mainly by asteroid impacts in the distant past, are visible for those that wish to see them this month