The Winds of Hell Planet

Many planets have been mentioned in different lists as being designed to be inhospitable to life. In contrast, K2-141B appears to be intended to be inaccessible. This planet has five times the mass of Earth, and since it orbits its star in just seven Earth hours, the majority of its mass is made up of lava. Its molten oceans are thought to extend 100 kilometers below the surface, thus "most" is not an exaggeration.

While the temperature on the planet's surface is typically around 3,000 degrees Celsius, the third that faces away can suddenly become shockingly chilly when it is briefly out of the sun. It is said to frequently reach -200 degrees Celsius.

Large pieces of lava solidify and create ephemeral continents as a result of this temperature shock, along with unimaginably strong winds. They are said to be capable of traveling at 5,000 kilometers per hour, or nearly four times the speed of sound. Any satellite we would attempt to launch there would be covered with metallic frost or vaporized within hours, becoming a regular component of the planet's rocky rain cycle. Also, we're going to hear a lot more about rocky rain in subsequent entries, so be on the lookout for that.