The moon had a fluctuating orbit around the Earth, but recent changes in distance could be caused by the tidal force shifting the planet’s mass.

NASA’s IMAP mission, led by Princeton University’s David McComas, will study the heliosphere — the invisible electromagnetic ...

As of Thursday, Sept. 18, the moon phase is Waning Crescent, and it is 11% lit up to us on Earth, according to NASA's Daily ...