Robert Roy Britt

The Sun might have had an incredibly violent youth in which tremendous X-ray flares battered the Earth into being, a new star survey suggests.

A faint visible-light flash likely heralds the merger of two dense neutron stars to create a relatively low-mass black hole.

Fantastic displays of light in polar regions of Earth known as aurora occur on Mars, too, scientists announced today.

In a wild turn of cosmic events, a group of astronomers is trying to reclaim the role of having made the first photograph of a planet around another star.

Terrain on Mars can be awfully chaotic. In fact one region is named for the dizzying array of mounds and squiggles.

Wherever there might be Earth-like planets, there are likely to be asteroids, too. And now astronomers have found evidence for an asteroid belt around another star similar to our Sun.

A crater rim near the lunar north pole is in near-constant sunlight yet not far from suspected stores of water ice.

A Richter Scale-like gauge designed to communicate asteroid risk has been revised in an effort to make it clearer to journalists and the public.

A detailed study of a huge solar eruption reveals that a series of smaller explosions combined in domino-effect fashion to fuel the blast.

New studies of the very distant universe confirm the idea that black holes and galaxies helped each other grow through massive mergers.

A new study of very distant galaxies adds to mounting evidence that the universe evolved quickly.

New computer simulations of the space near known extrasolar planets suggest about half of them could harbor an Earth-like world.

After a few close calls, astronomers have finally obtained the first photograph of a planet beyond our solar system, SPACE.com has learned. And this time they're sure.

SCOTTSDALE, AZ - The filmmaker who made Arnold Schwarzenegger a household name in the 1977 film "Pumping Iron" is making an IMAX documentary about NASA's dual rover mission to Mars.

SCOTTSDALE, AZ – Privatization and commercialization of space travel may be poised to skyrocket as NASA inches toward privatization and prize-offerings, leaders at a conference here said Tuesday.

The glow of planets outside our solar system have been spotted in the first direct detections of light emitted by alien worlds.

Fresh detail and more images suggesting Mars has been active in the recent geologic past were released Wednesday.

A galaxy that clings to our Milky Way has a strong and ordered magnetic field, even though it ought to be in disarray since the galaxy itself is being torn apart.

Scientist aren't sure what the interiors of Jupiter and Saturn look like or how the planets formed. But a new study of their insides suggests they took starkly different paths to giant status.

The space rock that carved Meteor Crater in Arizona hit the planet much more slowly than astronomers once figured, but still 10 times faster than a rifle bullet.

The discovery will help space weather forecasters predict solar activity.

Giant space clouds of gas may have changed the climate or atmosphere on Earth and fueled mass extinctions millions of years ago, scientists said Thursday.