Publication Date:
2016-06-07
Description:
Known facts about comets are reviewed including their organic and inorganic content. Photographs are used to show the differences in the physical appearances of the three types of comets. Space missions will provide the opportunity to determine the sequence of events that led to their formation and that of the solar system; how volatiles arrived on earth; and the basis for the existence of life on earth; and the source of the outer planetary system.
Keywords:
LUNAR AND PLANETARY EXPLORATION
Type:
NASA. Goddard Space Flight Center Space Missions to Comets; p 1-31
Format:
application/pdf