theia

Meanwhile, on Earth Today, Earth’s mantle isn’t completely uniform. About 8 percent of it is a little different from the rest, and forms two big piles near the core-mantle boundary. These two piles are called Large Low-Shear-Velocity…

Two gigantic blobs of dense rock hundreds of miles tall sit deep inside Earth. New research suggests these blobs are remnants of a planet that hit Earth 4.5 billion years ago.…

Q: If the Giant Impact Hypothesis is correct and the Moon is made from Earth and Theia (the Mars-sized object that collided with Earth), what happened to the rest of Theia after the collision? Steven Peckham  Portsmouth, Rhode Island…