"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system.

The asteroid, known as 2022 RD2, belongs to a rare class of space rocks called Arjunas. These objects travel around the sun ...

The sun's gravity will pull the moon farther away from Earth than it's been in over five years on Nov. 19, though it'll be ...

Isotopic fingerprints in lunar, terrestrial, and meteorite samples show Theia formed in the inner Solar System, likely near ...

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

“Impact flashes on the moon are very common,” University of Colorado Boulder astrophysical and planetary sciences professor ...

For the next half-century, Earth will have a new celestial companion. A small asteroid, officially designated 2025 PN7, has ...

Earth has picked up a new traveling companion – an asteroid named 2025 PN7 that now moves through space in step with us. This ...

Something called a "quasi-moon" was discovered in August, and now many are wondering if we should count our new neighbor as a ...

Researchers from the Max Planck Institute for Solar System Research led the study. They examined iron isotopes in 15 Earth ...

The next full moon will be the last supermoon of 2025, set to shine for days. Here's when to watch and what to know about ...