The Falcon 9 SpaceX rocket lifted off from space launch complex 40 at the Cape Canaveral Air Force Station in Cape Canaveral, Fla., early Tuesday. John Raoux/AP hide caption

itoggle caption John Raoux/AP

NASA and SpaceX partnered closely to make the mission to the International Space Station possible. Above, the SpaceX control room. SpaceX hide caption

itoggle caption SpaceX

Balinese government officials prepare to cull chickens as a precautionary measure to prevent the spread of bird flu at a market in Denpasar on April 26. Firdia Lisnawati/AP hide caption

itoggle caption Firdia Lisnawati/AP

Local officials burn chicken coops in anticipation of a resurgence in bird flu in Jakarta, Indonesia, in January. Concerns about potential misuse of research into genes that control the contagiousness of flu have stymied publication. Tatan Syuflana/AP hide caption

itoggle caption Tatan Syuflana/AP

Chickens were killed in Hong Kong last December in an effort to halt the spread of the deadly H5N1 strain of bird flu. Aaron Tam/AFP/Getty Images hide caption

itoggle caption Aaron Tam/AFP/Getty Images

The space shuttle Discovery is loaded onto the back of a modified 747 at Kennedy Space Center on April 15. The plane will ferry the shuttle to Washington, D.C., on April 17, where it will be permanently installed at the Smithsonian National Air and Space Museum. Kim Shiflett/NASA hide caption

itoggle caption Kim Shiflett/NASA

An electron microscope view of the bird flu virus. PR Newswire hide caption

itoggle caption PR Newswire