Interstellar objects used to be the stuff of theory problems and science fiction, but 3I/ATLAS has pushed them squarely into the realm of public anxiety. As another visitor from beyond the solar ...

Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...

An asteroid named YR4 is on a potential collision course with the moon, with NASA estimating a 4% chance of impact in 2032.

Astronomers observed a white dwarf and subdwarf 4,000 light-years away, spiralling toward collision, testing Einstein's ...

About 4.5 billion years ago, Earth had a violent neighbor. A young, still-forming planet named Theia slammed into our world with enough force to melt vast portions of its mantle and scatter a huge ...

China has successfully launched an ersatz Shenzhou-22 vehicle to bring the next batch of astronauts, who arrived at the station on October 31 ...

New research suggests Earth's Moon formed from the catastrophic collision of our planet with its \"sister\" planet, Theia, born nearby. This \"sibling\" p ...

Solar storms and other space weather could present an existential threat to the satellite industry unless its impact can be ...

Gold holds incredible value in the markets of our world. But have you ever stopped to wonder where it comes from?

Scientists believe the moon was formed from the debris of a collision between Earth and the planet Theia, which was likely ...

They went through the isotope mixtures in Earth and lunar rocks instead of using highly technical models. They dabbled in ...

According to the leading theory of how the Earth-Moon system formed (the Giant Impact Hypothesis), a Mars-sized object (named ...