Gliese 436b is an exoplanet located 30 light years from Earth in the constellation of Leo and seems to defy the laws of Physics. This planet orbits its star at a distance 15 times closer than Mercury is to the sun and the icy surface is roasting at a temperature of 439 °C (822 °F). So how does ice of all things remain completely solid at 439 degrees above its melting point? Because the gravity is so incredibly strong that it compresses the trace amounts of water vapor in the planet’s atmosphere into solid ice and prevents it from melting, no matter how much it burns.
One orbit around the star takes only about 2 days, 15.5 hours.