Yale researchers have discovered that a rocky super-Earth orbiting a nearby star is a diamond planet. This illustration shows the interior of 55 Cancri e, an extremely hot planet with a surface of mostly graphite surrounding a thick layer of diamond, below which is a layer of silicon-based minerals and a molten iron core at the center (Haven Giguere) “This is our first glimpse of a rocky world with a fundamentally different chemistry from Earth,”...
