Add Yahoo as a preferred source to see more of our stories on Google. New analysis suggests Mercury may hold a deep diamond layer formed as its carbon-rich core slowly crystallized. (CREDIT: Wikimedia ...

Mercury, the smallest and least explored planet in our solar system, has long been shrouded in mystery. Despite its scorched surface and barren landscape, new research suggests that beneath its ...

The diamonds might have formed soon after Mercury itself coalesced into a planet about 4.5 billion years ago from a swirling cloud of dust and gas, in the crucible of a high-pressure, high-temperature ...

Mercury does not look like a world built for extravagance. It is small, battered, sun-scorched and gray. Yet far below that dark surface, the innermost planet may hold one of the stranger planetary ...