NASA will provide live coverage as two American astronauts are due to spend hours Wednesday, March 18, on a spacewalk outside the ISS.

Defunct 1,300-Pound NASA Satellite Reenters Earth’s Atmosphere Over Pacific

On a quiet farm field in Massachusetts, a tall physics professor worked on a simple homemade rocket to be propelled by gasoline and liquid oxygen. On .

NASA chief Jared Issacman appears to be among those who support Pluto being reclassified as a planet. Could President Trump sign an executive order?

It remains difficult to anticipate the size of ice chunks falling from the sky, and even estimating how hail melts as it careens towards Earth is a challenge. To improve their understanding and better prepare for future events,