Billions of years ago, so the theory goes, something around the size of Mars smacked into Earth, spewing a whole bunch of ...

Earth’s moon is an unusual object in our solar system, and now there’s a new theory to explain how it got where it is, which puts some twists on the current “giant impact” theory. The work is ...

Earth's moon formed inside a cloud of molten rock, and may have done so before our planet itself formed, a new theory suggests.

A 2.35-billion-year-old meteorite with a unique chemical signature, found in Africa in 2023, plugs a major gap in our ...

Rocks collected by the Chandrayaan-3 offer more clues to the moon's violent past. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday.

LONDON —The Earth's moon may be a present from Venus, which once had a moon and then lost it, a new theory suggests. Under the theory, Earth's gravity captured Venus' old moon, giving our planet ...

Astronomers argue over the origin of the moon, with many experts convinced that it was born in a hellish flash when an errant planet about the size of Mars smashed head-on into the early Earth. On ...

The hollow moon theory first came about in 1969 during the Apollo 12 moon-landing mission. NASA researchers sought to learn more about the composition of the moon.

A conspiracy theory falsely claims differences in the astronauts' boots and footprints from the Apollo 11 mission prove the moon landing was fake.

The claim: Moon not visible before or after eclipse proves 'it's not the moon blocking out the sun' An April 8 Facebook video (direct link, archive link) shows the sun in the sky alongside text ...

The synestia theory suggests that this is because the moon formed at a high temperature of 4,000 to 6,000 degrees Fahrenheit (approximately 2,200 to 3,300 degrees Celsius).