A white dwarf has a mass equal to that of the Sun, but a diameter only about that of Earth. A cupful of white dwarf material weighs about 22 tons, the same as five elephants.
Abe Silverstein, who headed NASA's Space Flight Development Program, proposed the name Apollo for the space exploration programs in the 1960s. He chose that legendary Greek name because the virile Apollo was a god who rode through the skies in a magnificent golden chariot. The precedent of naming manned spacecraft for mythological gods had been set earlier with Project Mercury, also named by Silverstein.
About 27 tons of dust rains down on the earth each day from space, making a total of almost 10,000 tons each year
About 40 novae erupt in our galaxy each year.
About 68 percent of adults believe that during the next century evidence will be discovered that shows other life in this or other galaxies.
According to ancient Chinese legend, the appearance of the Hyades group of stars in the sky means rain. Interestingly, Roman and Greek legends say the same thing.
According to Professor David Saunders of the Psychology Department of the University of Chicago, abnormally large numbers of UFO sightings occur every 61 months, usually at distances from 1,500 to 2,000 miles apart
According to scientists, gold exists on Mars, Mercury, and Venus.
Afternoon temperatures on Mars go up to about 80 degrees in some areas, and down to -190 degrees F at night.
All the coal, oil, gas, and wood on Earth would only keep the Sun burning for a few days.
All the planets in our solar system could be placed inside the planet Jupiter
An area of the Sun's surface the size of a postage stamp shines with the power of 1,500,000 candles.
An estimated 10,000 million of the 100,000 million stars in our galaxy have died and produced white dwarfs.
An object weighing 100 pounds on Earth would weigh just 38 pounds on Mars.
Antarctica has been used as a testing laboratory for the joint United States-Soviet Union mission to Mars because it has much in common with the red planet.
Aristarchus, a Greek astronomer living about 200 B.C., reportedly was the first person to declare that the Earth revolved around the sun. His theory was disregarded for hundreds of years.
As of 1978, there were approximately 4,500 pieces of equipment revolving around the earth. About 900 of these pieces were satellites, the rest were added bits of debris.
As recently as half a century ago, there was no clear understanding as to why the sun shines. The discovery that it is due to nuclear-fusion reactions was not made until the 1930s, by Hans Beth and Carl von Weizsacker.
Astronaut and moon-walker James Irwin's NASA name tag, coated with lunar dust, sold at auction for $310,500. The cloth keepsake, a 6- by 12-inch rectangle, was cut from the insulated jacket worn by Irwin during the 1971 flight of Apollo 15. Lunar dust, which created a dark gray tint around the tag's edges, became embedded into the tag during three separate moonwalks Irwin took. His jacket and other equipment were left on the Moon to lighten the spacecraft’s load on the return trip home, but Irwin cut out and kept his NASA tag as a memento.
Astronaut John Glenn ate the first meal in space when he ate pureed applesauce squeezed from a tube aboard Friendship 7 in 1962.
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