Astronaut Steve Bowen works outside the International Space Station's Quest airlock during Monday's spacewalk. Bowen's spacewalk was unexpectedly extended by a computer malfunction.
Astronauts aboard the space shuttle Discovery, seen here lifting off from Kennedy Space Center in Florida, are preparing to dock with the International Space Station Saturday.
Stan Honda/AFP/Getty Images
Space shuttle Discovery lifts off at Kennedy Space Center in Cape Canaveral, Fla., on Thursday for the final time. The world's most traveled spaceship is heading toward the International Space Station with a crew of six on a journey that marks the beginning of the end of the shuttle era.
A 2009 London art installation, Super K Sonic Booum by Nelly Ben Hayoun, replicated a neutrino detector, allowing the public to ride in a boat accompanied by the physicists working on the Super-Kamiokande in Japan.