A new study, however, identifies a possible candidate. A separate team of astronomers compared 1983 data from the Infrared ...

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Thirty-five years ago today a revolutionary new era of astronomy began when the Hubble Space Telescope, tucked onboard the ...

An international team used 40 years' worth of data from two space probes to track down what they believe are signs of this ...

The next day a robotic arm tipped the telescope into orbit from the shuttle’s cargo ... in the distant future, our Milky Way galaxy will likely collide with our neighbor, Andromeda.

Venus dominates as the brilliant “Morning Star” in the east-southeast before dawn; the Eta Aquariid meteor shower takes place ...

To put that in perspective, this new planet at the outer rim of the solar system would be almost 20 times farther away from the sun than Pluto is ... to determining its orbit around the sun.

It’s not often that telescopes suspended in space have landmark birthdays like this one. Launched on April 24, 1990, NASA’s Hubble Space Telescope has orbited at about 320 miles above Earth ...