Geodynamicist Qian Yuan and a research team conducted a study that suggests pieces of a 'protoplanet' called Theia could still lie in Earth's mantle. Skip Navigation. Share on Facebook; ...

The protoplanet Vesta, once a fuzzball in telescopic images, is revealing a surprising range of features – from a mountain with a rise three times higher than Mt. Everest's to a puzzling band of ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A protoplanet slammed into the Earth about 4.5 billion years ago, knocking loose a chunk of ...

Protoplanet frozen in time. Oct. 8, 2009, 5:01 PM EDT. By Alan Boyle, Science Editor, NBC News. Science / AAAS. Click for video: The left view is a computer model of Pallas' surface, based on .

Roughly 4.5 billion years ago, a Mars-sized protoplanet named Theia slammed into the young Earth, causing a massive cataclysm that reshaped the very structure of the planet.This was a direct hit ...

The protoplanet Vesta With a diameter of about 330 miles (530 kilometers), Vesta is roughly as wide as the U.S. state of Arizona. In the main asteroid belt, only the dwarf planet Ceres is bigger.

A recent study accepted for publication in The Astrophysical Journal Letters discusses how astronomers used the Atacama Large Millimeter/submillimeter Array (ALMA) to examine protoplanet HD 169142 b, ...

New images suggest the protoplanet has carved a ring-shaped gap in the disk. This suggests other protoplanetary disks containing spirals may also harbour yet undiscovered planets, scientists said.

According to the results of a new study, Uranus may have survived a dramatic collision with a protoplanet twice, or even three times the size of Earth roughly four billion years ago, back when the ...

There's new research into the protoplanet that likely knocked Uranus over billions of years ago and transformed the planet in the process.