 | 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... 12 KB (1,016 words) - 02:57, 6 April 2024 |
 | Cupid is an inner satellite of Uranus. It was discovered by Mark R. Showalter and Jack J. Lissauer in 2003 using the Hubble Space Telescope. It was named... 6 KB (410 words) - 01:16, 17 March 2024 |
 | Uranus XXVI, is an inner satellite of Uranus. It was discovered by Mark R. Showalter and Jack J. Lissauer in 2003 using the Hubble Space Telescope. It... 8 KB (713 words) - 04:05, 17 March 2024 |
 | Joseph Baltzell Showalter (1851–1932), American politician in Pennsylvania Mark R. Showalter (born 1957), American astronomer Max Showalter (1917–2000),... 3 KB (342 words) - 08:33, 30 October 2023 |
 | described as having the appearance of a walnut. It was discovered by Mark R. Showalter in 1990 from analysis of old Voyager 2 probe photos and received the... 12 KB (1,154 words) - 00:57, 12 February 2024 |
possibly Styx and Kerberos, and also Neptune's Nereid. According to Mark R. Showalter, author of a recent study, "Nix can flip its entire pole. It could... 4 KB (450 words) - 07:45, 1 October 2023 |
 | period is 20.1 days. Styx was discovered by a team led by astronomer Mark R. Showalter, using fourteen sets of images taken between 26 June and 9 July 2012... 20 KB (1,732 words) - 00:27, 26 September 2023 |
 | 1960), British historian Mark R. Showalter (born 1957), American astronomer Mark Solonin (born 1958), Russian WWII historian Mark Steedman (born 1946), British... 41 KB (4,588 words) - 19:30, 10 April 2024 |
fate. They include Laurance Doyle, Peter Jenniskens, Pascal Lee, Mark R. Showalter, Franck Marchis, and Janice Bishop. The Center for Education promotes... 13 KB (1,523 words) - 07:42, 6 July 2023 |
 | may be experiencing intermittent and chaotic obliquity variations. Mark R. Showalter had speculated that, "Nix can flip its entire pole. It could actually... 38 KB (3,586 words) - 00:55, 1 April 2024 |