Moon Reference Libraries

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Schmitt Harrison
2010-10-29 20:31:07

Harrison Schmitt was a NASA astronaut, and is also an American geologist. He was born Harrison Hagan "Jack" Schmitt on July 3, 1935 in Santa Rita, New Mexico. After high school, he went to the California Institute of Technology and received a B.S. degree in science in 1957. He then went to Norway to study geology at the University of Oslo. In 1964, Schmitt earned a Ph.D. in geology from Harvard...

Mitchell Edgar
2010-10-12 13:30:20

Edgar Mitchell was an American pilot, engineer, and astronaut. He was also the sixth person to have walked on the moon. He was born Edgar Dean Mitchell, D.Sc. on born September 17, 1930 in Hereford, Texas. During his childhood, he was active in the Boy Scouts of America where he achieved its second highest rank, Life Scout. He attended Carnegie Institute of Technology and earned a Bachelor of...

Irwin James
2010-10-07 15:28:10

James Irwin was an American astronaut, an engineer, and was the eighth person to walk on the moon. He was born James Benson Irwin on March 17, 1930 in Pittsburgh, Pennsylvania. He lived a fairly normal childhood and graduated from East High School in Salt Lake City, Utah in 1947. He went on to attend the United States Naval Academy and received a Bachelor of Science degree in 1951. Following...

Aitken Robert Grant
2009-03-03 21:11:15

Robert Grant Aitken (December 31, 1864 "“ October 29, 1951) was an American inventor born in Jackson, CA. Aitken worked at the Lick Observatory in California where he systematically studied double stars, measuring their positions and calculating their orbits around one another. He methodically created a large catalog of such stars, which was published in 1932. It was entitled "˜New...

2004-10-19 04:45:41

Eclipse -- An eclipse occurs when an astronomical body such as a planet, or satellite gets between a source of light (e.g. the Sun) and another body. For instance, Jupiter eclipses its moons when it gets between them and the Sun. -- Lunar eclipses - are where the Earth obscures the Sun, from the Moon's point of view. The Moon moves through the shadow cast by the Earth. This can only happen...

2004-10-19 04:45:41

Crater -- A crater is a circular depression on the surface of a planet, moon, asteroid, or other celestial body. Craters are typically caused by meteorite impacts, although some are caused by volcanic activity. In the center of craters on Earth a crater lake often accumulates, and in craters formed by meteorites a central island (caused by rebounding crustal rock after the impact) is...

2004-10-19 04:45:41

The Moon -- The Moon is the largest satellite of the Earth, and is occasionally called Luna (Latin for moon) to distinguish it from the general use of the word "moon". The Moon is distinguished from the satellites of other planets by its initial capital letter; the other moons are described in the natural satellite article. The words moon and month come from the same Old English root word....

Lunar Phase
2004-10-19 04:45:41

Lunar Phase -- The lunar phase is an astronomical term referring to the portion of the Moon that is visibly illuminated by the Sun, as seen from Earth. As the Moon orbits the Earth, the relative positions of the Sun, Earth and Moon change. Since the Moon only appears bright due to the Sun's reflected light, only the half of the Moon closest to the Sun is illuminated. Lunar phases are...

2004-10-19 04:45:40

The Planet Venus is the second planet from the sun. It is often called the evening star or morning star and is brighter than any object in the sky except the sun and the moon. Because its orbit lies between the sun and the orbit of the earth, Venus passes through phases like those of the moon, varying from a large bright crescent when the planet is near inferior conjunction (nearest the...

2004-10-19 04:45:40

Earth -- in geology and astronomy, fifth largest planet of the solar system and the only planet definitely known to support life. Gravitational forces have molded the earth, like all celestial bodies, into a spherical shape. However, the earth is not an exact sphere, being slightly flattened at the poles and bulging at the equator. The equatorial diameter is c.7,926 mi (12,760 km) and the...

Word of the Day
  • A Roman unit of weight, 1⁄1728 of a pound.
  • A weight of four grains used in weighing gold and precious stones; a carat.
  • In anatomy, a formation suggesting a husk or pod.
  • The lowest unit in the Roman coinage, the twenty-fourth part of a solidus.
  • A coin of base silver of the Gothic and Lombard kings of Italy.
'Siliqua' comes from a Latin word meaning 'a pod.'