Northrop Grumman's 'Cygnus XL' cargo spacecraft undocked from the ISS and will make a fiery reentry into Earth's atmosphere.

An M3-class solar flare that lasted about 3 hours created a massive coronal mass ejection. The Solar Dynamics Observatory (SDO) and the Solar and Heliospheric Observatory (SOHO) captured the fireworks ...

A powerful "gamma-ray burst" has been seen exploding from merging neutron stars hidden within a previously unknown mini-galaxy leftover from an ancient cosmic crash. The "collision within a ...

Watch as the International Space Station takes shape in this time-lapsed NASA animation of its decade-long assembly, which ...

Florida visitors can watch rocket launches and scan the night sky from a public observatory—all in a single trip. The ...

The largest of all planets in the Solar System, Jupiter is a gas giant with a mass that is twice the size of all other planets combined. You may have learned in your school science text that if it ...

NASA's Artemis II mission is scheduled to launch as early as 1 April, following repeated delays.

Final preparations are underway to send astronauts back to the moon as officials say the rocket and crew are ready with a possible launch as early as April 1.

The 322-foot (98-meter) rocket will roll out of the hangar and back to the pad next week ahead of a planned launch early next month.

An update is coming today on NASA's Artemis 2 lunar mission to launch four astronauts on a historic journey around the moon.