China is readying itself this week for its most ambitious space mission yet. If successful, it will pave the way for permanent Chinese structures in space.

Russian spacewalker Oleg Kononenko is maneuvered near an explosive bolt on a Soyuz spacecraft during Thursday’s spacewalk for 2 hours and 48 minutes at the...

Shuttle Discovery’s astronauts prepared for the first spacewalk of their mission Tuesday and the installation of Japan’s giant lab to the international...