Over the course of human history, perhaps no single object in the night sky has drawn more attention than the Andromeda ...

The comets can be seen from the Northern Hemisphere as their orbits take them through our cosmic backyard. Two such ...

Many people in the Philly region reported seeing a strange object in the night sky on Tuesday. The object appeared to be a boomerang shape with a glow in the middle. "People lucky enough to be outside ...

Look up Oct. 5: the nearly Harvest Moon will guide you to Saturn, where a telescope reveals its famous rings — even if ...

A blazing fireball lit up the night sky over Texas on Sunday, sparking confusion, awe—and a flood of social media posts—as residents across the state looked skyward. From Houston to Austin and as far ...

This article first appeared on Wired.com. On August 10, six planets — Mercury, Venus, Jupiter, Saturn, Uranus, and Neptune — will line up in an arc in the night sky. Four of these planets — Mercury, ...

The moon and Venus will shine vividly alongside a bright star in the early morning in a striking celestial rendezvous that should be visible across the U.S. But unless you're willing to wake up before ...

Dark matter is an enigmatic form of matter not expected to emit light, yet it is essential to understanding how the rich ...

In 1408, Chinese astronomers and court officials observed an especially bright object in the sky that appeared for about ten days, but its identity remained unknown. The object was described as yellow ...

Astronomers observed something incredible in a region that not much was expecting—a planet-scale object drifting alone in ...