<p class="post_link">Link: <a href="http://www.esa.int/esaCP/SEM8TBYRA0G_index_0.html">http://www.esa.int/esaCP/SEM8TBYRA0G_index_0.html</a></p><p>This discovery, made by the ESA-ISRO instrument "Sub-keV Atom Reflecting Analyzer" (SARA) onboard the Indian Chandrayaan-1 lunar