A study of X-rays emitted a long time ago in a galaxy far, far away has positively identified a stellar mass black hole in Andromeda, a spiral galaxy located about 2.6 million light-years from Earth.
NASA says the pace of research aboard the International Space Station (ISS) is accelerating - even though the shuttles used to build it were recently retired.
At the turn of the 19th century, the binary star system Eta Carinae appeared faint and rather undistinguished to astronomers.
Japanese construction company Obayashi says it's working on plans for a space elevator that could take people to orbit by 2050.
Signs of recent 'Marsquakes' have been found, indicating that liquid water could be present - and raising hopes of life.
Free-flying planets, not anchored to a star, could outnumber stars in the Milky Way by 100,000 to one.
NASA astronomers have positively identified space buckyballs in a solid form. Prior to this important discovery, the microscopic carbon spheres were found only in gas form within the cosmos.
A black hole discovered by NASA's Chandra X-ray Observatory is generating winds blowing at 20 million miles per hour - about three percent of the speed of light.
Astronomers using the Hubble Space Telescope have identified a new type of planet - a waterworld surrounded by a thick, steamy atmosphere.
There's still some geological activity on the moon, new images from NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft show.
Detectable for only a few seconds but possessing enormous energy, gamma-ray bursts are notoriously difficult to capture as their energy does not penetrate the Earth's atmosphere.
Scientists believe they've discovered why the moon has no active volcanoes, despite containing plenty of liquid magma.
NASA engineers have conducted an initial test of the J-2X engine powerpack at the Stennis Space Center.
In the mid-nineteenth century, one of the most massive stars in our Milky Way galaxy suddenly got much brighter. For ten years, indeed, it was the second-brightest star in the sky.
The Swiss have a reputation for cleanliness and order, and now they're planning to tidy up space.
NASA astronomers using the Hubble Space Telescope have found a cluster of young, blue stars encircling the first intermediate-mass black hole ever discovered.
Venus's rotation is slowing down - and scientists aren't at all certain as to why.
New images from the European Space Agency’s Planck mission have revealed previously undiscovered islands of star formation, along with a mysterious haze of microwave emissions in our Milky Way galaxy.
US President Barack Obama’s proposed 2013 budget would effectively slash $226 million from NASA’s Mars exploration program.
Europe's new Vega rocket has successfully lifted off from the Kourou spaceport in French Guiana, taking nine satellites into orbit.