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On This Date in History - January 4

By Nick Greene, About.com

Daily Extra :
Astronomy & Space Word of The Day

Antipodal Point : the point that is directly on the opposite side of a planet.

Today in History:
1610: Galileo Galilei points his newly developed telescope at the sky and observes craters and mountains on the Moon, moving spots on the Sun, four moons revolving around Jupiter, the phases of Venus, and the almost innumerable stars of the Milky Way. Jan 4 thru 15, 1601 are called by some the most important days in the history of astronomy.

1643: Sir Isaac Newton born in Woolsthorpe, Lincolnshire, England.

1958: Sputnik 1, the first satellite, reenters the atmosphere and disintegrates.

1959: Luna 1 passes within 6000 km of Moon's surface, first spacecraft to reach the moon.

2004: Mars Exploration Rover Spirit lands in Gusev Crater on Mars.

Featured Astronomy Image of the Week

Check out the former Astronomy Picture of the Day. See what surprises await you this week.

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