Galaxies are running out of the basic building blocks of stars. The universe is forming fewer stars than it used to, and an Australian research team says the reason is a shortage of molecular hydrogen.
Predicting solar flares is going to become increasingly important as the sun hits the most active phase of its 11-year cycle.
A new million-dollar NASA project led by the University of Michigan aims to discover whether drops of salt water are common on Mars - and whether microbial life could survive in them.
Using data from the STEREO spacecraft, researchers at Southwest Research Institute and the National Solar Observatory have released a video of a coronal mass ejection in 2008 swallowing up the Earth.
A new analysis of a piece of lunar rock indicates that the moon is much younger than previously thought - or else scientists have been dramatically wrong about the way in which it was formed.
Well, the UFOlogists won't like it, but UCLA scienstists have come up with an explanation for the giant white arrow observed on the surface of Titan, Saturn's largest moon - and it's not an 'X marks the spot' from aliens.
SpaceX says it is ready to meet NASA's November 30, 2011 launch date for a mission that will deliver cargo to and from the International Space Station (ISS).
NASA's Hubble Space Telescope has captured a beautiful picture of a giant cosmic necklace. Aptly dubbed the Necklace Nebula (PN G054.2-03.4), the image shows a recently discovered planetary nebula - the glowing remains of an ordinary, Sun-like star.
The channels on Mars widely supposed to have been created by flowing water have a completely different origin, says a Texas Tech University professor.
Astronomers have discovered an exoplanet that's blacker than coal - a distant, Jupiter-sized gas giant known as TrES-2b that reflects less than one percent of the sunlight falling on it.
The Pentagon lost contact with the Falcon HTV-2 as it attempted to conduct a hypersonic test flight over the Pacific Ocean.
NASA’s Mars exploration rover has arrived at the Red Planet’s Endeavour crater which measures some 14 miles (22 kilometers) in diameter.
Yesterday morning, the sun unleashed a massive flare, its most powerful in nearly five years.
An experimental vehicle that can fly at 20 times the speed of sound and reach anywhere in the world within an hour is due to lift off today.
The building blocks of DNA have been arriving here from meteorites in greater quantity than previously thought, lending weight to the idea that the seeds of life on Earth originated in space.
The Earth is surrounded by a belt of antimatter - and it could perhaps be used to power future spacecraft, a team of scientists has suggested.
The solar-powered Juno spacecraft lifted off aboard an Atlas V rocket this morning and began its five-year journey to the planet Jupiter.
The Juno spacecraft's set to lift off today on its way to Jupiter, with scientists hopeful that the mission will help answer questions about the formation of the solar system.
Recent images captured by NASA's Mars Reconnaissance Orbiter seem to indicate the presence of flowing water during the warmest months on the red planet.
British scientists are looking for signs that we live in a multiverse - with multiple alternative universes existing in their own individual bubbles.