Ancient meteorite reveals a protoplanet formed in the outer Solar System earlier than thought, reshaping planet formation ...

Yet some regions are far enough from tectonic plate boundaries to contain rocks that have remained unchanged for billions of ...

Asteroid Vesta, once thought to be a protoplanet that had been left behind in its formation, is now the subject of a groundbreaking investigation of what may be a remnant of a far larger planet ...

The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the solar system was just getting started, a Mars-size protoplanet named Theia ...

As suspected, Vesta is no mere asteroid. It is a protoplanet, a remnant of the early days of our solar system that never grew up because Jupiter kept stealing all its potential mass. A 10-month ...

The study of our Moon suggests that Earth once had not one but many tiny moons that vanished over a course of billions of years ...

This Meteorite Is Likely The Remains Of An Extinct Ancient Protoplanet "No object with spectral characteristics similar to EC 002 has been identified to date." ...

If these blobs are, indeed, remnants of an ancient protoplanet, given how long they have been circulating through the mantle, the researchers suggest that they may have had some influences on how ...

All the Latest Game Footage and Images from Protoplanet Express Embark on an exciting journey to explore distant star systems and witness the fascinating process of planet formation. In this ...

A new study suggests pieces of the protoplanet Theia could be lodged deep in the Earth's mantle near the planet's core.