NASA's confirmed rumors that the Curiosity rover has found organic compounds on Mars - but says they're probably not a sign of life, and likely came from Earth.
NASA is planning to use a giant crossbow and harpoon to capture samples from a speeding comet.
A team of NASA scientists is looking at ways of using Star Trek-style tractor beams to reel in scientific samples in space.
Samples brought back from the Itokawa asteroid indicate that it's made up of the remnants of a much larger body.
NASA's announced that it's to launch an unmanned ship to an asteroid in 2016, gathering samples that could help to explain how life began.
Geologists have embarked upon an ambitious project to drill through the earth's crust and extract a sample of the mantle.
Martian soil may contain carbon-based organic molecules, the building blocks of life.