Latest fromNational Aeronautics and Space Administration

40-year-old engines in rocket blast
Business

40-year-old engines in rocket blast

The unmanned Antares rocket that blew up in a spectacular fireball in the United States during a launch to the International Space Station was using two 40-year-old Soviet-made rocket engines of the same type as one that exploded during tests in May.

Leap-frogging men to Mars
World

Leap-frogging men to Mars

A mission to Mars will be mankind's next giant leap. But one expert has suggested it might be simpler to get to the red planet in a series of smaller jumps - using asteroids as stepping stones.