Discover this week's must-see night sky events, moon phases, and stunning astrophotos. Sign up for our skywatching newsletter ...

We travel back in time with a historic "first" photo.

"We didn't anticipate big discoveries, given how extensively the planet has been studied, but we did complement Mars science ...

The MRV-MEP mission is designed to extend the operational lives of multiple satellites in geostationary orbit.

"Federal officials are racing to fork over America's public lands to one of wealthiest corporations on Earth before the ...

The U.S. Space Force is adding three dozen spacecraft to its growing constellation designed to detect and track incoming ...

"The real challenge is that this is still an area that we don't completely understand. We get surprises now and again." ...

"This has never been observed, until now." ...

"We believe that the mechanism that 'turns on' these gigantic radio emissions is linked to the formation process of galaxy ...

Scientists are trying to learn how small an exoplanet with an atmosphere can be. When you purchase through links on our site, ...

SpaceX did not state a reason for the July 20 launch abort. Liftoff occurred today (July 21) at 10:49 a.m. EDT.

Liftoff is scheduled for 6:45 p.m. ET.