National Aeronautics and Space Administration

In the first study of its kind, researchers will measure the air pressure from nearly three billion years ago by using gas bubbles in lava and tiny craters made by raindrops. The results could indicate what sort of life may have existed on the ancient Earth.

We keep sending missions to Mars with the key objective to search for past or present life. But what if a huge impact early in the Red Planet's history hindered any future possibility for life to thrive?

NASA is developing technologies that will allow lunar landers to automatically identify and navigate to the location of a safe landing site while detecting landing hazards during the final descent to the surface.

The first NASA spacecraft to image and map the dynamic interactions taking place where the hot solar wind slams into the cold expanse of space is ready for launch Oct. 19. The two-year mission will begin from the Kwajalein Atoll, a part of the Marshall Islands in the Pacific Ocean.

A group of astronomers spent two years photographing portions of the sky to look for small chunks of rock and ice orbiting beyond Neptune, in the Kuiper Belt region of our Solar System.

The remains of a unique dinosaur discovered in Argentina are helping scientists understand the connections between dinosaurs and birds. The study sheds light on an important moment in the evolution of life on our planet.

On the moon, a bottle of water would run about $50,000, and forget about that heavy crystal glass. That's because it costs around $50,000 per pound to launch anything to the moon. Discovering water on the moon would be like finding a gold mine.

Greetings, fellow SkyWatchers! It's Friiiiiiday… And time to head out to the Moon to begin some lunar exploration. Why not? This weekend commemorates Robert Goddard's birthday! While we're rocketing skyward, we'll take a look at a great globular cluster that's easy in both binoculars and telescopes, plus a few great stars you might or might not know about.

Dust storms usually call to mind vast sand seas along the Equator, or dried up lakebeds in Central Asia, but such storms can also occur at much higher latitudes.

What prompted the formation of our little corner of the universe – our sun and planetary system?