Chikyu drill prepares to pierce Earth's mantle
Earth's crust was unstable in the Archean eon and dripped down into the mantle
Ancient crater could hold clues about moon's mantle
The shifting sands of Earth's mantle
Planetary particle detector could help find 'fifth force'
Magnetic shield could protect life on super-Earths
'Extensive' water found in Mars' interior
Journey to the center of the Earth?