A Dec. 28, 2023, Facebook post (direct link, archive link) claims humanity's basic understanding of the solar system is flawed. "They say the sun is 400 times larger than the moon and that it only ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon ...

Historical observations of the Moon's motion, dating back to ancient civilizations, played a crucial role in the development of timekeeping and calendar systems. The Moon's orbital cycle can be ...

The new moon of July 2024 occurs today as Earth reaches its farthest point from the sun, known as aphelion. The new moon arrives on July 5 at 6:57 p.m. Eastern Time (2257 UTC), according to the U.S.

Earth has one true moon, but there are also several asteroids known as quasi-moons that are in orbit with the sun. A newly discovered asteroid, 2025 PN7, is the seventh confirmed quasi-moon that ...