Scientists now believe that a rocky planet twice Earth's size orbiting a nearby star can actually be classified as a diamond planet.
A completely unexpected spiral structure observed around an ancient star could offer a glimpse of what our own sun has in store.
The SpaceX Dragon capsule successfully docked with the International Space Station (ISS) earlier this morning.
Carnegie Mellon University spinoff Astrobotic Technology has now completed a full-size prototype of a solar-powered robot designed to search for water ice at the moon's poles.
The ESA's Hershel space observatory recently discovered enough water vapor to fill Earth's oceans more than 2000 times over in a gas and dust cloud that is on the verge of collapsing into a new Sun-like star.
NASA's Mars Curiosity rover has successfully collected and sampled a scoopful of sand and powdery material at the "Rocknest" site on the Red Planet.
University of Cambridge scientists have discovered a new set of enormous, rapidly growing supermassive black holes in the early universe.
The Dragon Space X commercial cargo ship was lofted into orbit aboard a Falcon 9 rocket at 8:35 p.m. EDT, putting on a spectacular show of light and thunder from the rocket's nine engines.
NASA’s Hubble Space Telescope has snapped a dazzling image of the globular cluster Messier 69, or M 69 for short.
NASA's Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy.
NASA's Curiosity rover is getting ready to take its first scoop of Martian soil.
A star has been discovered orbiting tightly round the massive black hole at the center of our Milky Way galaxy, making its circuit in just eleven and a half years.
The European Space Agency's (ESA) Herschel space observatory has spotted pristine material that matches comets in our own Solar System in a dust belt around the young star Beta Pictoris.
The high-resolution stereo camera on the European Space Agency’s (ESA) Mars Express has captured a series of breathtaking images depicting a region within the 1800 km-wide and 5 km-deep Argyre basin.
Astronomers have come up with their most accurate measurement yet of the Hubble constant, the rate at which the universe is expanding.
Astronomers are scratching their heads after discovering not one, but two black holes at the center of a globular star cluster - something they didn't think was possible.
The European Space Agency's (ESA) third Automated Transfer Vehicle cargo ferry has completed the final part of its successful six-month servicing mission to the International Space Station (ISS).
The International Space Station will tomorrow be forced to change orbit to dodge a piece of space junk, Russian news agencies are reporting.
Austrian skydiver Felix Baumgartner says he's all set for his record-breaking attempt to jump from the edge of space next Monday.
The European Space Agency's Venus Express spacecraft has spotted a surprisingly cold region high in the planet's atmosphere that may be frigid enough for carbon dioxide to freeze out as ice or snow.