Pluto. Pluto and it's moon Charon are close in size.
More Science Trivia
Venus. The atmosphere of Venus is 95% carbon dioxide.
Gallon. A gallon is 128 ounces.
Contrail. High-flying jets produce ice-crystal clouds called "contrails" when they fly through moist, frigid air.
Albert Einstein. Einstein came to the U.S. temporarily to teach then, when WWII began, stayed in America.
9.2. The strongest U.S. earthquake struck Prince William Sound, Alaska in March 1964.
Wood. Natural resources, both actual and potential, are those that are supplied by nature.