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Measuring the Earth-Sun distance during a lunar eclipse
Measuring Earth-Sun distance lunar eclipse
2011/9/28
The classical method for measure the Earth-Sun distance is due to Aristarchus and it is based upon the measure of the angle Moon-Earth-Sun when the Moon is exactly in quadrature. Such an angle is only...
Lunar mission sheds light on early solar system（图）
Lunar mission light early solar system
2010/10/13
The geology of the Moon and the dynamics of the early solar system are much clearer now thanks to three new studies of the lunar surface by NASA's Lunar Reconnaissance Orbiter (LRO). As well as provid...
Dec 06, 2006，NASA on Monday unveiled the initial elements of the Global Exploration Strategy and a proposed U.S. lunar architecture, two critical tools for achieving the nation's vision of returning h...
5 December 2006，The Planetary Society, which had long advocated the construction of a lunar outpost as a "way station" on the road to Mars, welcomed the NASA proposals. Nevertheless, Planetary Society...