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The Moon's Phases
Source: The National Aeronautics and Space Administration (NASA) The lunar month is the 29.53 days it takes to go from one new moon to the next. During the lunar month, the Moon goes through…Moon Walks
Twelve astronauts have walked on the moon, the last in 1972. Here are the names of those astronauts listed chronologically by the date of their walk. July 20, 1969—Apollo 11Neil Armstrong…To the Moon and Mars
In January 2004, President George W. Bush announced the ambitious goal of putting humans on Mars. The first stage involves returning to the Moon by the year 2020 and establishing a base…The Martian Moons
Mars has two very small elliptical-shaped moons, Deimos and Phobos—the Greek names for the companions of the god Mars: Deimos (terror) and Phobos (fear). They were discovered in Aug. 1877 by…Jovian Moons
GanymedeEuropaCallistoIoAmalthea Jupiter has a total of 63 known satellites. The four great moons of Jupiter were discovered by Galileo Galilei (1564–1642) in Jan. 1610, and are called the…Saturn's Moons
TitanCassini-Huygens Saturn has 56 known moons, nine of which were announced in June 2006 and are known by the temporary designations S/2004 S19 and S/2006 S1 through S8. The five largest…The Uranian Moons
Oberon and Titania Umbriel and Ariel Miranda Puck Caliban and Sycorax New Uranian Moons Discovered There are 27 known moons of Uranus. Ten of the moons range in size…Neptune's Moons
TritonNereidWarren Moon
Warren MoonBorn: Nov. 18, 1956Football QB MVP of 1978 Rose Bowl with Washington; MVP of CFL with Edmonton in 1983; led Eskimos to 5 consecutive Grey Cup titles (1978-82) and was playoff MVP…nutation
(Encyclopedia) nutation, in astronomy, a slight wobbling motion of the earth's axis. The causes of nutation are similar to those of the precession of the equinoxes, involving the varying attraction…Trending
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