Do exoplanets have names?
The International Astronomical Union (IAU) oversees the naming of celestial bodies. In the case of exoplanets, the IAU sometimes asks the public to make suggestions.
The planets in our own Solar System are named after mythical deities. When William Herschel discovered a new planet in 1781, he wanted to name it after George III, the King of England. Eventually, though, it was named Uranus, after the god of the sky. But what about planets orbiting other stars? Most are only known by a catalogue number, like HD 10180d. But the International Astronomical Union has now chosen a number of names based on suggestions from the general public.
Our own planet’s name is Earth. Other planets have names, too, like Mars and Saturn. But what about exoplanets orbiting other stars? Can you think of any good names for them?