Most of the Moon's water might have come from asteroids
Comets aren't as much of a factor as previously thought.
Luxembourg's spacecraft will test its asteroid mining tech
It will use a water-based propulsion system.
Scientists find a tailless comet from Earth's early days
The rocky body got kicked to the edge of the Solar System billions of years ago.
NASA is funding asteroid spaceships and other far-out concepts
The projects are getting $100,000 each to prove their ideas are feasible.
Key ingredient of life might have come from comets
Ribose could form in space despite the harsh conditions.
Amateur astronomers caught a Jupiter impact on camera
An asteroid or comet smacked into the gas giant, and there's telescope video to prove it.
NASA's asteroid explorer faces tests that simulate space
OSIRIS-REx has to pass a regimen that includes extreme cold and vacuum.
Scientists to drill into asteroid impact that wiped out dinosaurs
They want to know how life recovered after the disastrous celestial collision.
Russia has plans to nuke Earth-bound asteroids, if necessary
Plan B is Bruce Willis.