Known as the giant-impact hypothesis, this proposed event involves a collision between Earth and a hypothetical Mars-sized ...

How the Earth got its moon is a long debated question. The giant impact theory – which states that the Moon formed from the a collision between the early Earth and a rocky body called Theia – has ...

The moon could have formed in a matter of hours following the giant impact between Earth and a Mars-size protoplanet early in the history of the solar system. The theory comes from new simulations ...

A half century after NASA's Apollo 17 lunar module lifted off the moon's northeastern near side quadrant, planetary scientists still don't completely understand when or how our moon first formed. They ...

Theia is a hypothetical protoplanet that collided with Earth several billion years ago, causing the formation of the Moon. And recently, astronomers may have discovered its origin. Indeed, according ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles within this cloud collided and clumped together, driven by gravity and ...

How did the Moon form and how fast did it happen? This is what a recent study published in The Astrophysical Journal Letters hopes to address as a team of scientists investigated a potential new ...

Add Yahoo as a preferred source to see more of our stories on Google. New Moon impact models suggest South Pole-Aitken ejecta may place deep mantle material near Artemis south pole landing zones.

The moon may have formed through Earth’s collision with close neighbor, a new study finds. One bright day on Earth about 4.5 billion years ago, everything changed. A massive object slammed into the ...