Scientists have discovered over 6,000 planets that orbit stars other than our sun, known as exoplanets. More than half of ...

NASA's Zena Cardman and Mike Fincke were joined on the return by Japan’s Kimiya Yui and Russia’s Oleg Platonov.

The planet is experiencing the most powerful solar event since 2003—and it's bringing spectacular Northern Lights.

February brings several special events, including a rare "occultation," and a planetary parade of six planets.

NASA’s Artemis II Moon rocket is now at the launch pad, setting the stage for final prelaunch tests. The mission will send ...

NASA’s Artemis II rocket has reached its launch pad after a painstaking overnight crawl across Kennedy Space Center.

The sun sure has woken up this week, unleashing a powerful X-class solar flare on Jan. 18 that hurled a colossal, fast-moving ...

The Artemis II mission will set several notable human spaceflight records. Astronauts Reid Wiseman, Victor Glover, Christina ...

An X-class solar flare has produced an Earth-directed coronal mass ejection, increasing solar activity and raising the likelihood of geomagnetic impacts within 24 hours.

The James Webb telescope's search for habitable exoplanets is getting a big boost from its new star-watching companion, ...