Multiple choice general knowledge Which planet was named GEORGE'S STAR to honour king george 2 ? neptune pluto uranus mercury Reveal answer Fill a bubble to check yourself C Correct answer Explanation Uranus was briefly called 'Georgium Sidus' (George's Star) by its discoverer William Herschel in 1781 to honor King George III. Neptune was discovered later, Pluto is no longer a planet, and Mercury was known since ancient times.