Scientists in Hawaii say a new vent has opened at one of the world's most active volcanoes, sending lava shooting up to 65 feet high.

NASA is celebrating and mourning its space ventures Friday. New video from shuttle Discovery's launch shows awesome shots of liftoff. But, an unmanned rocket and satellite never made it past earth Friday.

An astronaut who should have been on space shuttle Discovery's final flight says he's there "in spirit."

As America's space shuttle program nears its end, the space shuttle Discovery took center stage with a Thursday afternoon launch in picture-perfect weather.

Sharks may not be the best poster child for animals in danger -- but environmentalists say even predators with sharp pointy teeth need better protection.

NASA's sky-mapping spacecraft has embarked on a new phase in its mission after running out of coolant designed to chill its heat-sensitive instruments.