💎 A Planet of Diamonds: 55 Cancri e ✨ Imagine an entire world glittering like a gemstone in space — that’s 55 Cancri e, a planet scientists believe could be made largely of diamond. 💠 Orbiting a star about 40 light-years away in the constellation Cancer, this exotic “super-Earth” is twice Earth’s diameter and eight times more massive. But here’s the jaw-dropper — it completes an entire orbit in just 18 hours, meaning a year there lasts less than one day on Earth. Unlike our oxygen-rich world,