Enceladus Plume Search, Nov. 27 |
Enceladus Plume Search, Nov. 27 |
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#101
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 ![]() |
Interesting item in the science plan kernel (S16) just released to the NAIF website:
OBSERVATION_ID: S1629 SEQUENCE: S16 OBSERVATION_TITLE: Plume Search SCIENCE_OBJECTIVE: Hope to detect/observe plumes, whether from volcanic activity or geysers. OBS_DESCRIPTION: Point and stare. SUBSYSTEM: ISS PRIMARY_POINTING: ISS_NAC to Enceladus (0.0,5.0,0.0 deg. offset) REQUEST_ID: ISS_018EN_PLUMES001_PRIME REQUEST_TITLE: ENCELADUS Geyser/Plume Search REQ_DESCRIPTION: 1;ENCELADUS Geyser/Plume Search 1x1xNPp -- 3 different exposures BEGIN_TIME: 2005 NOV 27 19:00:00 UTC END_TIME: 2005 NOV 27 20:00:00 UTC -------------------- |
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Guest_BruceMoomaw_* |
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#102
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QUOTE (Jeff7 @ Dec 11 2005, 06:32 PM) Another passing thought/wild theory: What if Iapetus' dark side was caused by something similar to Enceladus' plumes - a massive "tiger stripe" on the one side, which is now the ridge? It could have spewed out material long ago, coating one side of the moon with dark material, and at the same time, formed a volcanic ridge, similar to the mid-Atlantic ridge on Earth. The trouble with this is that the dark material is so perfectly aligned with Iapetus' forward-facing side -- which is stretching coincidence unless the dark material instead spiralled in from an orbit further beyond Saturn and impacted Iapetus' forward face. My betting is still that the dark material is exogenic -- especially since a good thermal explanation has now been devised for why it extends farther in low-latitude regions but doesn't extend all the way to the poles: http://www.aas.org/publications/baas/v37n3/dps2005/745.htm http://www.aas.org/publications/baas/v37n3/dps2005/491.htm http://www.agu.org/cgi-bin/SFgate/SFgate?&...P11B-0107" |
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