Mary Cleave, space shuttle astronaut who led NASA's science division, dies at 76

Nasa receives signal from 10 million miles away in space

NASA moves closer to use of plutonium-238 to power space missions. The shipment of 0.5 kilograms of new heat source plutonium oxide is the largest since the domestic restart of plutonium-238 production more than 10 years ago.

NASA-funded Researchers Get Greenlight to Apply for China Moon samples