Shuttle astronauts bid farewell to space station crew (AFP)

US space shuttle Discovery and International Space Station crew embrace and exchange handshakes as they hold a farewell ceremony in the Harmony Module before departing the station. The seven astronauts of the US shuttle Discovery bid farewell Tuesday to their three colleagues at the International Space Station after a busy mission to install Japan's first space laboratory.(AFP/NASA) AFP - The seven astronauts of the US shuttle Discovery bid farewell Tuesday to their three colleagues at the International Space Station after a busy mission to install Japan's first space laboratory.