A U.S. military mission will get off the ground Tuesday morning (Dec. 7) after a two-day delay, and you can watch the liftoff live.
A new video (available on YouTube in 4K) offers a stunning view of the 2021 solar eclipse that occurred on Saturday (Dec. 4).
Venus and the moon make a dazzling duo in the night sky tonight (Dec. 6), starting the moon's multi-day journey past a slew of planets.
The only total solar eclipse of 2021 was only visible across a remote stretch of Antarctica. See photos of what scientists saw.