There's a planet made entirely of diamond? Meet 55 Cancri E, a super-earth exoplanet located 40 light years away. This fascinating celestial body is about twice the size of Earth and is estimated to be covered in a thick layer of graphite and diamond. Its extreme temperatures and high pressure cause carbon atoms to crystallize into diamonds, making it a literal diamond planet. Imagine a world where the surface sparkles with precious gemstones. This is stunning reminder of the incredible diversity and wonders that exist beyond our own planet.