How big is the moon?
The moon’s diameter is 2,160 miles.
The earth’s diameter at the equator is 7,926.68 miles.
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How far can a U.S. Army Pershing missile travel?
The 34.5-foot, 10,000-pound surface-to-surface Pershing missile has a range of approximately 400 miles.
How many stars can you see on a clear night?
At any given time on a clear night in a dark place with no obstructions on the horizon, 2,500 stars are visible to the naked eye.
How much energy does a supernova produce?
The explosion of a star is called a supernova and is estimated to release 10^49 ergs or 1 followed by 49 zeros. By comparison, pronouncing an average syllable releases 200 ergs, and the first atom bomb produced 1021 ergs.
How fast does the earth travel around the sun?
The earth moves at 66,641 miles per hour around the sun.
In what geologic era did man evolve?
Man evolved in the Pleistocene epoch, which began about 2.5 million years ago and ended about 10,000 years ago. We now live in the Recent (or Holocene) epoch, beginning about 10,000 years ago.
What do Americans fear most?
A poll of 3,000 Americans yielded the following top five fears: 1. Speaking before a group. 41 percent 2. Heights. 32 percent 3. Insects and bugs. 22 percent 4. Financial problems. 22 percent 5. Deep water. 22 percent