Harvard physicist Avi Loeb has suggested that some interstellar meteorites could be artificial in nature.
A microbe with an appetite for meteorites has shown that space rocks may be able to carry life across the cosmos.
Scientists have found new evidence to suggest that life could have arisen elsewhere in the solar system.
The Japanese space agency JAXA has announced the discovery of a cave hidden beneath the lunar surface.
An intriguing meteorite believed to be from Mars is thought to contain signs of extraterrestrial life.
A meteorite impact on the lunar surface in September produced the brightest flash ever recorded.