On August 15, 1977, Ohio State University's Big Ear telescope detected the mysterious Wow! Signal, a powerful 72-second radio ...

These so-called Venus co-orbital asteroids are currently undetected because of their alignment in the sky but could one day drift into Earth’s path, at least according to simulations combining ...

Astronomers warn that Earth may be at risk from previously undetected asteroids co-orbiting near Venus. Hidden by the Sun’s ...

A surprising new study reveals that the first stars appeared in a pre-heated universe, challenging earlier ideas about early cosmic conditions.

Hale-Bopp became known as the "great comet" after the previous "great comet of 1811". That comet was visible to the naked eye for around 260 days, and was the record-holder until Hale-Bopp came into ...

This peculiar behavior has long fascinated scientists, particularly after NASA’s Voyager 2 flyby of Uranus in 1986. The ...

• On the evening of Oct. 9, the moon will pass through the Pleiades star cluster. Use binoculars to see some of its stars around the moon, and use a telescope to see stars pop out along the dark edge ...

Mysterious spectral data from Mars reveals a previously unknown mineral, indicating a dynamic past capable of supporting life.

To probe the mysteries of how galaxies evolve over time, scientists needed a supercomputer with out-of-this-world ...

CAPE CANAVERAL, Fla. (AP) — Scientists have uncovered new types of organics in icy geysers spouting from Saturn’s moon Enceladus, bolstering the likelihood that the ocean world may harbor conditions ...

An unusual astronomical image of a distant galaxy could reveal the presence of a mysterious substance that makes up the ...