Cassini to Begin Final Five Orbits Around Saturn

NASA's Cassini spacecraft will enter new territory in its final mission phase, the Grand Finale, as…

Nuclear reactors on rockets may fuel future crewed trips to Mars

NASA’s push to develop a rocket engine powered by a nuclear reactor could create a faster,…

Nuclear reactors on rockets may fuel future crewed trips to Mars

NASA’s push to develop a rocket engine powered by a nuclear reactor could create a faster,…

Giant loner asteroids suggest baby planets formed quickly

The oldest intact asteroids hint that planets didn’t grow by slowly gathering small space rocks, but…

Giant loner asteroids suggest baby planets formed quickly

The oldest intact asteroids hint that planets didn’t grow by slowly gathering small space rocks, but…

First exomoon might have been spotted 4000 light years away

Astronomers may have found the first exomoon around a distant planet, and have asked to use…

First exomoon might have been spotted 4000 light years away

Astronomers may have found the first exomoon around a distant planet, and have asked to use…

NASA Recommends Safety Tips to View the August Solar Eclipse

More than 300 million people in the United States potentially could directly view the Aug. 21…

Q&A: A Matter of Considerable Gravity

All the planets in the solar system interact gravitationally with the sun, but Jupiter’s great mass…

Media Invited to June 21 Science, Safety Briefings on August Total Solar Eclipse

For the first time in 99 years, a total solar eclipse will cross the entire nation…