ScienceUS Remembers 'Star Voyager' Astronauts Killed in Space Shuttle 'Challenger' A tragic day for not just Americans but also people from around the world, seven "space voyagers" died in the launch of the Challenger only 73 seconds after it took off.by Urian B.
ScienceNASA Astronauts Complete Successful Spacewalk To Set Up HD Cameras For Incoming Spacecraftby Sami Ghanmi