Planetary news,11-2／行星新資訊 11-2
Credit: Wei Luo, Northern Illinois University
(1) New computer-developed map shows more extensive valley network on Mars.上古火星的海洋,流域與降雨。
http://www.eurekalert.org/pub_releases/2009-11/niu-ncm112009.php
(2) If Earth has rings. 有趣短片"地球的光環"。
http://www.youtube.com/v/UT2sQ7KIQ-E
Credit: NASA/JPL-Caltech/JHUAPL
(3) The Bubble of Our Solar System. 太陽系泡泡。
http://photojournal.jpl.nasa.gov/catalog/PIA12310
香港天文學會
月球行星組
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