space biology
Water Once Ran on Mars
Jef Akst | Oct 1, 2012
The Curiosity rover discovers pebbles that were likely formed by ancient streams on the Red Planet.
Space-bound Fish
Jef Akst | Jul 31, 2012
Japanese astronauts deliver an aquarium to the International Space Station to study the effects of microgravity on marine life.
Space Rocks
Cristina Luiggi | Jun 1, 2012
Orbiting ultrasound machines are being used to diagnose and treat astronauts' kidney stones.