File:NASA-Deimos-MarsMoon-19951003.jpg
NASA-Deimos-MarsMoon-19951003.jpg (397 × 290 pixels, file size: 9 KB, MIME type: image/jpeg)
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[edit]DescriptionNASA-Deimos-MarsMoon-19951003.jpg |
English: Astronomy Picture of the Day
http://apod.nasa.gov/apod/ap951003.html October 3, 1995 Deimos: A Small Martian Moon Explanation: Mars has two tiny moons, Phobos and Deimos. Pictured above is Deimos, the smallest moon of Mars. In fact, Deimos is the smallest known moon in the Solar System measuring only 9 miles across. The diminutive Martian moons were discovered in 1877 by Asaph Hall, an American astronomer working at the US Naval Observatory in Washington D.C. The existence of two Martian moons was predicted around 1610 by Johannes Kepler, the astronomer who derived the laws of planetary motion. In this case, Kepler's prediction was not based on scientific principles, but his writings and ideas were so influential that the two Martian moons are discussed in works of fiction such as Jonathan Swift's "Gulliver's Travels", written in 1726, over 150 years before their actual discovery.
http://planetary.org/blogs/emily-lakdawalla/2009/1868.html http://elsofista.blogspot.com/2009/03/deimos-la-pequena-luna-marciana.html |
Date | |
Source | http://apod.nasa.gov/apod/image/deimos.gif |
Author | NASA / JPL / Viking Project |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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