Video: Antares rocket returns to flight with new engines

An apparent exterior coolant leak from a Russian laboratory module at the International Space Station has been reported by the crew. It follows similar leaks that struck a Russian Soyuz crew ferry craft and a Progress cargo ship within the past year.

Eric Boe, one of three astronauts assigned to the first piloted test flight of a Boeing CST-100 Starliner commercial crew ship later this year has been removed from the mission due to unspecified medical issues, NASA announced Tuesday. He will be replaced by veteran astronaut Mike Fincke.

The ever-dependable Delta 2 rocket continued its flawless service to NASA and Earth sciences Saturday with the launch of a $916 million environmental probe focused on producing global maps of soil moisture from space.