Core science Some mantle plumes are enriched in 3 He, but the source of this primordial isotope is unclear. The partitioning behaviour of helium between silicate and iron melts—as determined by ...

Earth's inner core may be filled with a weird substance that is neither solid nor liquid, according to a new study. How hot is Earth's core? Ancient process that created rare earth elements discovered ...

The solid inner core of Earth is a mere billion years old, new research finds. Fresh look at Apollo moon rocks solves decades-old lunar mystery Ancient process that created rare earth elements ...