| 词条 | Sodium tail of the Moon |
| 释义 |
The Moon has been shown to have a "tail" of sodium atoms too faint to be detected by the human eye. Hundreds of thousands of kilometers long, the feature was discovered in 1998 as a result of scientists from Boston University observing the Leonid meteor shower.[1][2] The Moon is constantly releasing atomic sodium as a fine dust from its surface due to photon-stimulated desorption, solar wind sputtering, and meteorite impacts.[3] Solar radiation pressure accelerates the sodium atoms away from the Sun, forming an elongated tail toward the antisolar direction. The continual impacts of small meteorites produce a constant "tail" from the Moon, but the Leonids have intensified it,[4] thus making it more observable from Earth than usual.[5] See also{{portal|Moon}}
References1. ^{{cite web|title=Astronomers discover that moon has long, comet-like tail|url=http://www.cnn.com/TECH/space/9906/07/lunar.sodium.trail/|work=CNN|accessdate=2007-12-18|date=1999-06-07}} {{The Moon}}{{Moon-stub}}2. ^[https://ntrs.nasa.gov/search.jsp?R=20110004923 "The Sodium Tail of the Moon"]. NASA. 2009-12-01. Retrieved 2017-10-20 3. ^{{cite web |last= |first= |title=The Sodium Tail of the Moon |url=https://ntrs.nasa.gov/search.jsp?R=20110004923 |publisher=NASA |via=ScienceDirect |pages= |date=December 1, 2009}} 4. ^{{cite web|url=https://science.nasa.gov/headlines/y2000/ast26oct_1.htm|title=Lunar Leonids 2000|accessdate=2007-12-18|date=2000-11-17|work=NASA|deadurl=yes|archiveurl=https://web.archive.org/web/20071126081027/http://science.nasa.gov/headlines/y2000/ast26oct_1.htm|archivedate=2007-11-26|df=}} 5. ^{{cite web|title=Moon's tail spotted|url=http://news.bbc.co.uk/1/hi/sci/tech/363105.stm|work=BBC|accessdate=2009-11-15|date=1999-06-09}} 2 : Lunar science|Sodium |
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