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Astronomy Picture of the Day -- Spacecraft Rosetta Shows Comet has Two Components
NASA ^ | July 21, 2014 | (see photo credit)

Posted on 07/21/2014 8:58:06 AM PDT by SunkenCiv

Explanation: Why does this comet's nucleus have two components? The surprising discovery that Comet 67P/Churyumov–Gerasimenko has a double nucleus came late last week as ESA's robotic interplanetary spacecraft Rosetta continued its approach toward the ancient comet's core. Speculative ideas on how the double core was created include, currently, that Comet Churyumov–Gerasimenko is actually the result of the merger of two comets, that the comet is a loose pile of rubble pulled apart by tidal forces, that ice evaporation on the comet has been asymmetric, or that the comet has undergone some sort of explosive event. Pictured above, the comet's unusual 5-km sized comet nucleus is seen rotating over the course of a few hours, with each frame taken 20-minutes apart. Better images -- and hopefully more refined theories -- are expected as Rosetta is on track to enter orbit around Comet Churyumov–Gerasimenko's nucleus early next month, and by the end of the year, if possible, land a probe on it.

July 21, 2014

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; churyumovgerasimenko; comet; comet67p; comets; rosetta; science
[Credit: ESA/Rosetta/MPS for OSIRIS Team; MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA]

1 posted on 07/21/2014 8:58:06 AM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
See the keywords for more.

2 posted on 07/21/2014 8:58:59 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv
Its the remains of a massive Gorn statue.

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3 posted on 07/21/2014 9:01:18 AM PDT by cripplecreek (Remember the River Raisin.)
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To: SunkenCiv

“Rosetta Has Two Comas”


4 posted on 07/21/2014 9:39:57 AM PDT by mikrofon (APOD Bump)
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To: SunkenCiv

With just a little work, you could turn it into a rubber ducky.


5 posted on 07/21/2014 10:09:42 AM PDT by Kirkwood (Zombie Hunter)
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To: cripplecreek

Gorn’s right foot?

It looks like a boot to me.


6 posted on 07/21/2014 4:28:08 PM PDT by TheOldLady
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To: Kirkwood

You’re right! It could very well be a rubber ducky. [smiles]


7 posted on 07/21/2014 4:30:02 PM PDT by TheOldLady
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