Mars' largest moon, Phobos, may have been blasted off into space by some catastrophe on the planet's surface, say two different scientific studies.
Most of us never get a chance to see the northern lights for real, as they only tend to be visible in the far north - but now there's an alternative.
Space shuttle Discovery is now at the launch pad in preparation for its final flight.
'Data clippers' powered by solar sails could be exploring the outer planets within twenty years, shipping vast quantities of scientific data back to Earth.
The moon was blitzed by two different sets of asteroids or comets in its youth, according to new results from NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft.
The odds are that a habitable exoplanet will be found by the middle of next year if the rate of discovery continues at its current pace, two scientists say.
Forget about traveling to another country for vacation! Boeing and Space Adventures have a much more interesting destination in mind for you: the International Space Station (ISS) in low Earth orbit (LEO).
An astronomer says he's caught a star in the act of chewing up a companion and spitting out a second generation of exoplanets.
There's been liquid water on the Martian surface throughout the planet's history, measurements by NASA's Phoenix Mars Lander suggest.
Astronomers believe they've found a new type of black hole, following observations of the most extreme ultra-luminous X-ray source yet discovered.
Later today, two asteroids will swing so close to the Earth that they pass between us and the orbit of the moon.
Martian soil may contain carbon-based organic molecules, the building blocks of life.
In a project reminiscent of Prometheus' theft of fire from the gods, NASA's planning to dive into the sun and capture some of its atmosphere.
Researchers have developed a new method of predicting solar storms that they say could help to avoid power and communications blackouts.
NASA has successfully completed a two-minute, full-scale test of its DM-2 rocket motor - despite not knowing for sure whether it will ever actually be going anywhere.
What's being described as one of the most complex space scientific instruments ever built is on its way to the International Space Station to seek out the 'dark universe'.
NASA's Kepler telescope has for the first time observed a planetary system with two planets passing in front of their star.
Astronomers have discovered a planetary system containing at least five and possibly seven planets, orbiting the Sun-like star HD 10180. It makes the system the most similar to our own yet discovered.
A group of Danish amateurs will next week launch its own rocket - with plans for a manned flight to follow if all goes well.
The National Aeronautics and Space Administration has launched a new campaign as its shuttle program dwindles down - the agency is asking for users to submit suggestions for music that will be officially used as the wakeup song for members of the shuttle crew.