The Search for ExtraTerrestrial Intelligence (SETI) is planning to actively send messages from Earth (Active SETI) to detect possible extraterrestrial civilizations.
An international crew of researchers on Friday walked out of a set of windowless modules after a grueling 520-day simulation of a flight to Mars.
Day in Pics: 19th December
Showbiz World - December 19, 2014
Stardust Awards 2014