固定
Can't stop staring at this GIF of the lower mantle's anomalous slow-wave mega-blobs...which might be last remnants of the paleo-planet Theia which collided with proto-Earth 4.5 billion years ago to create "our" Earth and the Moon.
GIF
Jacob Shell
@JacobAShell
Geographer. Prof at Temple University. Author of 2 books. Elephants. Maps. Archaeofuturist Transportation.