US scientists have discovered a diamond bigger than planet Earth. Orbiting a star that is visible to the naked eye, this diamond is actually a planet twice the size of our own.
The rocky planet, called '55 Cancri e', orbits a sun-like star in the constellation Cancer and moves so fast that a year there lasts merely 18 hours. With a radius twice that of Earth's and a mass eight times greater, it is incredibly hot, with the temperatures touching 3,900 degrees Fahrenheit (2,148 Celsius).
The surface of this planet is covered in graphite and diamond rather than water and granite, says Nikku Madhusudhan, the Yale researcher. The study estimates that at least a third of its mass, equal to three Earths, could be diamond.
Diamond planets have been seen earlier too before but for the first time, one has been seen orbiting a sun-like star and studied in such detail.