Evidence that a vast ocean may have covered one-third of the surface of Mars some 3.5 billion years ago gives new support to the idea that the planet may once have harbored life.
Many of the most famous comets in history, including Halley, Hale-Bopp and McNaught, may have come to our solar system from elsewhere.
Images of an alien planet passing in front of its sun have demonstrated that gas giants can form very quickly.
A South Korean rocket which was launched yesterday has crashed, a local news station reports.
A flood of UFO sightings over Australia was probably prompted by the launch of the Falcon 9 private spaceship.
With only two more shuttle missions set to fly, your chances of getting to the International Space Station (ISS) are slim. But as a consolation prize, NASA is promising to send your photo instead.
Astronomers believe they have solved the mystery of what inspired Walt Whitman to write about a 'strange huge meteor-procession' in his poem Year of Meteors.
A spaceship set to be used as a taxi service for NASA is due to lift off today.
Scientists have discovered evidence sitting right under their noses that indicates there may have been more water on Mars than previously thought.
Well, they're off: six trained astronauts on a 520 day mission to... Moscow.
Mission controllers for the Mars Express have created a video showing the view as the spaceship orbits Mars.
NASA's Mars Reconnaissance Orbiter (MRO) has helped solve two forty-year-old mysteries and delivered new information about climate change on Mars.
NASA is working on new satellite-aided search and rescue technology that will make it quicker to find people in distress.
NASA's Phoenix Mars Lander - which landed two years ago today - will not be rising from the ashes.
The Earth may be about to move into a million-degree cloud of interstellar gas, according to Polish and US scientists.
Changes are coming rapidly to NASA, and the future of the United States' dedication and capability to mount manned space missions are increasingly in question.
Boeing has completed prelaunch testing for the first of 12 next-generation Global Positioning System (GPS) IIF navigation spacecraft.
The Japanese Aerospace Exploration Agency (JAXA) is poised to launch a probe on a two-year mission to study the weather and explore the enigmatic surface of cloud-shrouded Venus.
It seems to be a day for carelessness. First Apple loses another iPhone prototype, and now Jupiter's lost a belt.
It's so, so annoying when stuff gets mislaid, so it must be a great relief to astronomers to be able to say they've probably found the nearby universe's missing matter.