Mercury may be like a diamond in the sky

Based on new simulations, a team of geoscientists suspects Mercury may have a 10-mile-thick layer of diamonds buried beneath its graphite grey surface.

While we can't yet go digging to prove it, a new study reveals the likely presence of a layer of diamond nearly ten miles thick at the boundary between Mercury's core and mantle.

When viewed by spacecraft from 2011 to 2015, Mercury appeared excepti...