Mark R. Showalter, Date of Birth, Place of Birth
TweetMark R. Showalter
American astronomer
Date of Birth: 05-Dec-1957
Place of Birth: Abington Township, Pennsylvania, United States
Profession: astronomer
Nationality: United States
Zodiac Sign: Sagittarius 
About Mark R. Showalter
- Mark Robert Showalter (born December 5, 1957) is a Senior Research Scientist at the SETI Institute.
- He is the discoverer of six moons and three planetary rings.
- He is the Principal Investigator of NASA's Planetary Data System Rings Node, a co-investigator on the Cassini–Huygens mission to Saturn, and works closely with the New Horizons mission to Pluto.
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