A collared gray wolf released in Colorado in January as part of the state’s historic reintroduction effort died in Rocky Mountain National Park this week, wildlife officials said Thursday.

Sometimes you catch a lucky star. The flare-up of a star near the Orion Nebula has revealed for the first time the icy boundary between small rocky worlds and their giant neighbours in a planet ...

Icy mountain ranges can be seen rising from Pluto ... or about as high as the Rocky Mountains. Scientists were also stunned Wednesday to see a close-up section of Pluto that showed no sign ...

Most asteroids tend to be rocky or icy, and this is the first exploration ... SpaceX launched the spacecraft into an overcast midmorning sky from Nasa’s Kennedy Space Centre.