A stunning photo has captured all seven of our neighboring planets in Earth's sky at the same time, possibly for the first time ever. The composite image, captured by astrophotographer Josh Dury, ...

Four small, newly discovered worlds are less than six light-years away from Earth, and their discovery reinforces a ...

The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan. Mercury, which is the closest planet to the sun, would be the first to be ...

Since the 1980s, a strange X-ray emission has puzzled astronomers. At the heart of the Helix Nebula, a dying star may have ...

Should U.S. support of Ukraine be contingent on a deal involving Ukrainian… Continue reading ...

A rare celestial event on Feb. 28 will offer skywatchers the chance to witness a "planet parade" of all seven planets in our solar system outside of Earth. It's the last time this type of ...

Stargazers will be able to experience a rare celestial event Friday when all of Earth's neighboring planets are visible for a "planet parade." The planetary alignment, which has been ongoing in ...