China launched its second space mission in less than 24 hours Tuesday, sending a Beidou navigation satellite toward an orbital perch around 22,000 miles above Earth.

The blastoff of four broadband Internet satellites aboard a Soyuz rocket from French Guiana has been pushed back to Friday, the launch company Arianespace announced Monday.

Atlantis blasted off on May 11, 2009 for the final space shuttle mission to service the Hubble Space Telescope, a dramatic flight that prepared the iconic observatory for a new revolution of discovery