NASA's SPHEREx space observatory has spent the last six weeks undergoing checkouts, calibrations, and other activities to ensure it is working as it should. Now it's mapping the entire sky—not just a ...

May 2024's intense displays of aurora could happen again as the sun's solar maximum period continues, with intense ...

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

The first operational Starlink launch, consisting of 60 satellites, happened in May 2019. As of February 2025, Starlink, ...