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Author:
NASA
An aurora is a natural display of light in the sky that can be seen with the unaided eye only at night....
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Christiaan Huygens, (HY guhnz), (1629-1695), was a Dutch physicist, astronomer, and mathematician. In...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
A constellation (KON stuh LAY shuhn) is a group of stars visible within a particular region of the night...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Earth is a small planet in the vastness of space. It is one of nine planets that travel through space...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Edwin Powell Hubble, (1889-1953), was an American astronomer whose work revolutionized our understanding...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Europa, (yu ROH puh), is a large moon of Jupiter. Its surface is made of ice, which may have an ocean...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Extraterrestrial (EHKS truh tuh REHS tree uhl) intelligence is intelligent life that developed somewhere...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Galileo (GAL uh LAY oh or GAL uh LEE oh) (1564-1642), an Italian astronomer and physicist, has been...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Giovanni Domenico Cassini, (1625-1712), was an Italian-born French astronomer who discovered four moons...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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Author:
NASA
Global warming is an increase in the average temperature of Earth's surface. Since the late 1800's,...
Type: Reference Material
Date Added: Jul 08, 2009
Date Modified: Jul 08, 2009
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