Most near-Earth asteroids are thought to drift in from the main asteroid belt. But a small subset may have a much closer origin: the moon. One intriguing example is 469219 Kamoʻoalewa (2016 HO3), an ...

Late in 2024, astronomers spotted a new near-Earth asteroid named 2024 YR4. By mid-2025, its improved orbit tracking raised ...

Astronomers are getting prepared for the chance to see "the most energetic lunar impact event ever recorded in human history" ...

NASA research using Apollo lunar regolith data refines the Moon’s impact record and places limits on meteorite contributions to Earth’s water over geologic time.

MFM simulation of the canonical Moon-Forming giant impact. Here different colors trace different components of Gaia and Theia. The lower mantle of Gaia, denoted by the dashed circle with a radius of 0 ...