Particles from comet 81P/Wild 2 brought to Earth in 2006 by NASA's Stardust spacecraft seem to indicate that Jupiter formed more than three million years after the formation of the first solids in our Solar System.
Astronomers have spotted a number of young stars in the Orion nebula changing right before their very eyes.
By observing the way the moon reflects light from the Earth, astronomers have established that there's life on our planet - not as pointless as it seems, as the technique could help find life elsewhere.
Astronomers have been intrigued for years over the correlation between the mass of a galaxy's central black hole and the velocity of stars in a vast, roughly spherical structure known as its bulge.
An asteroid discovered last year could hit the Earth on 5 February 2040, says NASA - but really probably won't.
Mysterious aurora-causing high-speed electrons detected by space probes have finally been explained, thanks to a massive computer simulation.
NASA's hoping to reorganize its budget to allow a trip to Mars by the end of the decade.
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.