Pointed away from Earth about 404 miles overhead, the orbital observatory will circle the planet from north to south about 14 ...

Scientists previously thought that solar geoengineering—or releasing particles into the atmosphere to reflect solar ...

NASA's SPHEREx space observatory has spent the last six weeks undergoing checkouts, calibrations, and other activities to ...

Catch some morning meteors, see the Moon reach First Quarter, and watch Mars visit the Beehive in the sky this week.