On Neptune and Uranus, the crushing pressure thousands of miles down is thought to tear methane apart and squeeze the loose carbon into showers of solid diamond, and in 2017 physicists recreated the exact reaction in a laboratory

Thousands of miles beneath the blue haze of Neptune, the conditions get strange enough that carbon may fall as rain in the form of diamonds, and the chemistry was confirmed not by a probe but by a plastic sheet, a laser, and a few billionths of a second... The post On Neptune and Uranus, the crushing pressure thousands of miles down is thought to tear methane apart and squeeze the loose carbon into showers of solid diamond, and in 2017 physicists recreated the exact reaction in a laboratory appe