Stereo |
Stereo |
Apr 12 2009, 10:08 PM
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#106
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
That really is an amazing shot!
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Sep 29 2010, 07:46 PM
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#107
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
There was an interesting result by STEREO reported in arXiv a few days ago http://arxiv.org/abs/1009.2710
STEREO A has managed to detect for the first time some sort of activity or gas release on the near Earth asteroid Phaethon, long suspected to be an extinct comet because it shares the orbit with a meteor stream |
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Oct 10 2010, 08:13 AM
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#108
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
This seems to have gone unnoticed: http://sirius.bu.edu/News/
STEREO A has photographed the comet-like tail of Mercury. and it was noticed by an amateur accessing STEREO images! |
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Oct 10 2010, 05:11 PM
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#109
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Senior Member Group: Members Posts: 1669 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Interesting to see the tail and the solar corona wafting by in the animation. Would this increase the odds for aurorae on Mercury?
-------------------- Steve [ my home page and planetary maps page ]
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Oct 10 2010, 05:43 PM
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#110
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Member Group: Members Posts: 555 Joined: 27-September 10 Member No.: 5458 |
Probably not. The tail is point away from the sun in an elongated teardrop-like shape. Very little (if any) of the tail is present at a high or low enough latitude for ions to interact with the tail. I suppose it could be possible to see some very faint aurora if the tail were pointing toward the sun. However, the tail is extremely thin and its likely there wouldn't be enough diffusion/inhibitance within it to produce auroras in Mercury's already lightweight magnetosphere.
What would be incredible to see though is if very faint aurora could be produced on the surface in some way. Possibly it could look like the rainbow colors in a soap bubble? We honestly don't understand magnetospheres very well, especially around terrestrial bodies, Mercury being the only other planet aside from Earth to have one in our solar system. Messenger will definitely answer a lot of questions and expand a lot in the ways of knowledge. -------------------- |
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Oct 11 2010, 12:50 PM
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#111
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
This brings to my mind the question of whether this might lead to indirect detection of the existence of sub-mercurial asteroids.
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Oct 11 2010, 01:43 PM
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#112
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
I can't see how you could detect such asteroids when the tail itself is many times less bright than the parent object. Scattered light would be a pain.
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May 3 2014, 11:47 AM
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#113
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Member Group: Members Posts: 401 Joined: 5-January 07 From: Manchester England Member No.: 1563 |
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Oct 8 2014, 02:19 PM
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#114
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
contact with STEREO-Behind was lost last October 1
http://stereo-ssc.nascom.nasa.gov/new.shtml I was reading of their plans for next year's solar conjunction. very interesting, although it almost went unnoticed: Important Notice About Reduced STEREO Science Operations Planned Science Data During Reduced STEREO Science Operations NASA's STEREO Entering New Stage of Operations |
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Dec 14 2015, 03:23 PM
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#115
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Recovery attempts continue, even a year later!
http://phys.org/news/2015-12-nasa-stereo-b...d-recovery.html |
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Aug 22 2016, 11:23 PM
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#116
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Junior Member Group: Members Posts: 43 Joined: 10-December 05 Member No.: 605 |
The recovery attempts were quite possibly successful!
http://www.nasa.gov/feature/goddard/2016/n...-stereo-mission |
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Apr 23 2017, 05:54 AM
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#117
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Member Group: Members Posts: 184 Joined: 2-March 06 Member No.: 692 |
I've been hoping for this for months. Fantastic.
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Apr 23 2017, 06:51 AM
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#118
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
I've been hoping for this for months. Fantastic. Umm, you were responding to a post nearly a year old. The recovery attempt back in 2016 didn't succeed and the spacecraft is still out of contact. https://stereo-ssc.nascom.nasa.gov/behind_status.shtml -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Apr 24 2017, 05:50 AM
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#119
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Member Group: Members Posts: 184 Joined: 2-March 06 Member No.: 692 |
Oops. I just wish I hadn't drunk all that cough syrup last night, ya know. :-)
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Sep 25 2017, 03:28 PM
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#120
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Just checked DSN as per my habit, surprised to see contact with B! (here's a link to a Twitter account that archives DSN status, for anyone who checks later):
https://twitter.com/dsn_status/status/912295068177924097 And another from the 22nd : https://twitter.com/dsn_status/status/911340950517161984 |
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