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Astronomy Picture of the Day
NASA ^ | 6/28/09 | Cassini Imaging Team, SSI, JPL, ESA, NASA

Posted on 06/28/2009 5:29:46 AM PDT by sig226


Fresh Tiger Stripes on Saturn's Enceladus
Credit:
Cassini Imaging Team, SSI, JPL, ESA, NASA

Explanation: Do underground oceans vent through the tiger stripes on Saturn's moon Enceladus? Long features dubbed tiger stripes are known to be spewing ice from the moon's icy interior into space, creating a cloud of fine ice particles over the moon's South Pole and creating Saturn's mysterious E-ring. Evidence for this has come from the robot Cassini spacecraft now orbiting Saturn. Pictured above, a high resolution image of Enceladus is shown from a close flyby. The unusual surface features dubbed tiger stripes are visible on in false-color blue. Why Enceladus is active remains a mystery, as the neighboring moon Mimas, approximately the same size, appears quite dead. Most recently, an analysis of dust captured by Cassini found evidence for sodium as expected in a deep salty ocean. Conversely however, recent Earth-based observations of ice ejected by Enceladus into Saturn's E-Ring showed no evidence of the expected sodium. Such research is particularly interesting since such an ocean would be a candidate to contain life.


TOPICS: Astronomy Picture of the Day
KEYWORDS: apod

1 posted on 06/28/2009 5:29:46 AM PDT by sig226
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To: fnord; Number57; KevinDavis; rdb3; MNJohnnie; RightWhale; proudofthesouth; hattend; ...

2 posted on 06/28/2009 5:30:21 AM PDT by sig226 (Real power is not the ability to destroy an enemy. It is the willingness to do it.)
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To: sig226

WOW!!


3 posted on 06/28/2009 5:30:36 AM PDT by bmwcyle (Obama is an illegal alien)
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To: sig226

There’s some pretty cool stuff right here in our own solar system.


4 posted on 06/28/2009 5:33:43 AM PDT by cripplecreek (The poor bastards have us surrounded.)
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To: sig226
That's pretty friggin' cool right there.

Makes me sad to think that the idiot chimp in the White House is going to make space missions, manned or unmanned, impossible for the entire current generation.

5 posted on 06/28/2009 8:56:52 AM PDT by Costumed Vigilante (Congress: When a handful of evil morons just isn't enough)
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To: Costumed Vigilante

And the one after that and the one after that if he isn’t stopped now.

Sweet pic. It’s so nice to see.


6 posted on 06/28/2009 4:08:54 PM PDT by TheOldLady
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To: sig226

Stunning!


7 posted on 06/29/2009 10:17:33 AM PDT by redhead (Obama: Lame Duck in 2010. Check out the Half-baked Sourdough! (shameless blog plug!))
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To: sig226

so how thick must the ice be to retain the impact craters?


8 posted on 06/30/2009 8:19:57 AM PDT by VaRepublican (I would propagate taglines but I don't know how.)
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