Astronomers have identified hypervelocity stars, such as the pulsars PSR J0610-2100 and PSR J2043+1711, which exhibit high accelerations. While their movements are believed to be natural phenomena, ...

In a new study, a team of astrophysicists led by CU Boulder has set out to unravel the mysteries of UFOs—not the alien ...

Although chances of death on their mission are relatively low, the effects of their long term stay in space will likely have ...

Advanced alien races might get around the galaxy by piloting stars rather than spacecraft according to a new study.

It starts with the promise of skipping school — always an illicit thrill at nine years old. My son and I, seasoned truants, ...

Hectic activity is underway at the Indian Spaceport in Sriharikota, Andhra Pradesh, where the European Proba-3 twin ...

The unexpected discovery of microbial life in a piece of rock from an asteroid shows how hard it is to avoid contaminating samples brought back to Earth ...

On November 21, 1676, the Danish astronomer Ole Rømer discovered the speed of light. Before Rømer figured it out, scientists ...

Blue Origin's next space tourism mission is launching Nov. 22, with 'Space Gal' Emily Calandrelli. Watch live on Space.com.

Jeffrey Greenberg/Universal Images Group/Getty Images I have a friend whose kid is obsessed with the New York City subway ...