University of Maryland School of Medicine researchers say they've established certain key features in proteins that are needed for life to function on Mars and other extreme environments.
There could be a lot more potentially habitable planets out there than previously thought, and some of them could be very nearby.
For only the second time ever, astronomers have discovered a triple quasar system - possibly part of a much larger structure.
Astronomers have found the closest solar system to our own to be discovered in nearly a century - the third-closest ever found, in fact.
Researchers say they've conducted the first reconnaissance of a distant planetary system, collecting the spectra of four red exoplanets which orbit a star 128 light years away from Earth.
SpaceX’s reusable Grasshopper spacecraft has managed to hop more than 24 stories into the air, hover and then land safely.
NASA has created a 3D reconstruction of ancient water channels below the surface of Mars, revealing evidence of a catastrophic flood in the last 500 million years.
The brightest comet for several years should become visible in the Northern Hemisphere night sky over the next few days.
Scientists at the University of York say they've dispelled the so-called firewall paradox which suggests that anything falling into a black hole would be burned up as it crossed the event horizon.
Using binary stars as a standard for reference, astronomers have measured the distance to our neighbouring galaxy, the Large Magellanic Cloud (LMC), more accurately than ever before.
A recently-discovered comet has a chance - albeit a small one - of hitting Mars in October next year.
The evidence is piling up that the building blocks of life could have been brought to Earth by comets, after emerging in the dust of interplanetary space.
Astronomers have found the strongest evidence yet that the ocean on Jupiter's moon Europa may consist of salty water, like our own. And, they say, that salty water appears to be making its way to the surface.
The Curiosity ground team has been forced to switch the Mars rover to a redundant onboard computer, thanks to a memory problem.
As NASA's SpaceX Dragon spacecraft docks with the ISS, its head, Charles Bolden, has warned that recent political events could impact the agency's mission.
Two prebiotic molecules - one related to DNA and the other to an amino acid - have been identified in a gas cloud near the center of the Milky Way.
The Earth temporarily gained a third radiation belt last year, NASA's Van Allen Probes mission has revealed.
NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) and the European Space Agency's XMM-Newton, have together accurately measured, for the first time, the spin rate of a black hole with a mass two million times that of our sun.
The world's first space tourist, Dennis Tito, has announced plans for a manned fly-by of Mars - crewed, he suggests, by a married couple.
Phonesat STRaND-1 - a nanosatellite carrying a Google Nexus One smartphone - was launched into orbit from India earlier this week.