Space

Mars simulation aims to study astronauts' performance

Herschel delivers spectacular first pictures

NASA preps space shuttle Endeavour for Saturday launch

Supernovae are most distant ever detected

Space program should focus on Earth, NRC tells Obama

Conditions on Mars were once right for life

Ariane takes giant comms satellite into space

New type of black hole discovered

Weather satellite lifts off a day late

Erupting volcano snapped from space