When you buy through links on our articles, Future and its syndication partners may earn a commission. Mercury, seen in this false-color image, may have a deep layer of inner diamonds, new research ...

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 ...

Ice on Mercury, the closest planet to the Sun, may seem impossible. But, could scorching temperatures on that world help form ice? The scorching surface of Mercury, where temperatures can reach 400 ...