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Fast Facts: Nov. 4
November 4, 2010
- Only 48 percent of the sun’s energy actually reaches Earth.
- Uranus has 21 moons.
- Approximately 26,000 meteorites crash to Earth each year.
- There are more than 7,000 asteroids in the solar system. Only one is visible to the naked eye.
- It takes Pluto 25 years to receive as much solar energy as Earth receives in one minute.
- Every square meter of the surface of Earth receives 240 watts of sunlight.
- The three most common elements in the universe: hydrogen, helium and oxygen.
- Goldfish have better memory in cold water than in warm water.
- Some Arctic and Antarctic fish have proteins in their blood that act as antifreeze.
