Astronomers discovered a planet that orbits its star so closely that its surface is being scorched into magma and vaporizing ...

Celebrate International Dark Sky Week by hosting a backyard stargazing party. Experts suggest optimal timing with clear skies and minimal moisture for ...

John Grunsfeld has a model of the Hubble Space Telescope on his bookshelf. It's right next to a model of a NASA space shuttle ...

A dazzling snapshot from ESO’s Paranal Observatory captures a rare sky parade — the Moon, a comet, and nearly every visible planet strung across the heavens. This celestial lineup is an optical ...

Exactly 35 years ago this week, the Hubble Space Telescope was released from the Space Shuttle Discovery cargo hatch. Four ...

For 35 years, the Hubble Space Telescope has taken photos of celestial objects across the universe. Look back at 10 photos ...

Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.

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 ...

For 35 years, the Hubble Space Telescope has taken photos of celestial objects across the universe. Look back at 10 photos ...

The agency said that key components of the ambitious project, including the Long March 10 heavy-lift carrier rocket, the ...

As a comet spins up, it starts to fall apart, which is likely what is happening to Comet SWAN now before it ceases to be an ...