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Aluminum is the most abundant metal in the crust of the earth.

Flying saucer was first used in 1947 to refer to UFO sightings.

Hydrogen is the most abundant element in the universe.

Robert Goddard is considered to be the father of the space age.

At -40 degrees (40 degrees below zero) the Centigrade and Fahrenheit thermometer readings are identical.

The average person produces 1.5 quarts of saliva a day.

The outermost atmosphere of the sun is the corona.

The only metal that is liquid at room temperature is mercury.

The first test-tube baby was born in Oldham, England.

Asbestos is the only rock that can be woven.

The most radioactive food is Brazil nuts.

One inch of rain is equal to 10 inches of snow.

The average adult breathes 700,000 cubic inches of air a day.

Nitrogen is the most common element in the atmosphere of the Earth.

The first woman to discover a comet was Caroline Herschel, in 1786.

Pumice is the only rock that floats in water.

A gallon of water weighs 8.34 pounds.

The diameter of the sun is approximately 865,000 miles.

NASA stands for National Aeronautics and Space Administration.

The Global Positioning System (GPS) was developed by Ivan Getting.

The moon is approximately 238,000 miles from the earth.

The sun is approximately 93,000,000 miles from the earth.

The metal with the highest melting point is tungsten, at 6,170 degrees Fahrenheit.

The first American in space was Alan Shepard, on May 5, 1961.

Laser stands for Light Amplification by the Stimulated Emission of Radiation.

Radar stands for radio detection and ranging.

There have been five great extinctions of life in the history of the Earth. The Ordovician, the Devonian, the Permian-Triassic, the late Trassic and the Cretaceous-Tertiary Event.

The first American to "walk" in space was Edward White, on June 3, 1965.

The approximate curvature of the earth is 8 inches every mile.

The approximate speed of the earth's rotation is 1038 miles per hour.

The moon weighs approximately 81 quintillion tons.