DON’T worry about contact with aliens from other solar systems—they may
be our distant cousins. According to an American astronomer, there is a slim
chance that microbes could be carried from one solar system to another on rocks
blasted from terrestrial planets by asteroid impacts, spreading life across the
Galaxy.
“About one meteorite ejected from a planet belonging to our Solar System is
captured by another stellar system every 100 million years,” Jay Melosh of the
University of Arizona told the Lunar and Planetary Science Conference in Houston
this week.
Although radiation would threaten stowaway microbes, Russell Vreeland of…
