Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

KENNEDY SPACE CENTER — As SpaceX launched the four-person crew of the Fram2 mission on Monday night, it was a takeoff for the history books as they will be the first humans to ever orbit Earth ...

Perhaps the best known of all comets is Halley, correctly pronounced so that it rhymes with rally, not daily. It is named after the 17th-18th century astronomer Edmond Halley. This ...

The school-bus-sized observatory launched on April 24, 1990 and overcame early setbacks to become one of the most ...

In the years since, Hubble has gathered more than 1.6 million observations and 430 terabytes of data. The telescope has ...

MPH fusion rocket to Pluto in 4 years? Sunbird's tech is poised to disrupt space travel, opening up future deep-space ...

Comets, which are composed of ice, frozen gas, dust and rocky material, are believed to be relics of the early solar system. When they get close to the Sun, the ice breaks apart and the gas is ...

As the Lyrid meteor shower lights up the sky tonight, it’s the perfect moment to pair nature’s oldest light show with some ...

Here’s a little spoiler for next month’s Cosmic Calendar: early May will see the return of the Eta Aquarid meteor shower. The ...

A U.K. startup called Pulsar Fusion has recently unveiled a project it has been developing “in complete secrecy” for the past ...

The trans-Neptunian object Altjira, 44 times farther from the Sun than Earth is, could be the second known trinary, ...