20 Faces. An icosahedron has twenty faces, is one of the Platonic solids, and represents the universe.
More Science Trivia
Greenhouse Effect. Venus and Mars also have a "greenhouse effect".
Pluto. Pluto and it's moon Charon are close in size.
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.