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Astronomy Picture of the Day -- A Dangerous Sunrise on Gliese 876d
NASA ^
| April 29, 2012
| (see photo credit)
Posted on 04/29/2012 4:55:30 AM PDT by SunkenCiv
Explanation: On planet Gliese 876d, sunrises might be dangerous. Although nobody really knows what conditions are like on this close-in planet orbiting variable red dwarf star Gliese 876, the above artistic illustration gives one impression. With an orbit well inside Mercury and a mass several times that of Earth, Gliese 876d might rotate so slowly that dramatic differences exist between night and day. Gliese 876d is imagined above showing significant volcanism, possibly caused by gravitational tides flexing and internally heating the planet, and possibly more volatile during the day. The rising red dwarf star shows expected stellar magnetic activity which includes dramatic and violent prominences. In the sky above, a hypothetical moon has its thin atmosphere blown away by the red dwarf's stellar wind. Gliese 876d excites the imagination partly because it is one of the few extrasolar planets known to be in or near to the habitable zone of its parent star.
(Excerpt) Read more at 129.164.179.22 ...
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; gliese876d; science; xplanets
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To: cripplecreek
I just looked at your photobucket. Very cool.
21
posted on
04/29/2012 8:50:25 AM PDT
by
samtheman
( http://www.youtube.com/watch?v=CZ-4gnNz0vc)
To: SunkenCiv
That planet is in or near the habitable zone of its star? Maybe they just don’t go above ground during the day...
22
posted on
04/29/2012 10:30:05 AM PDT
by
TheOldLady
(FReepmail me to get ON or OFF the ZOT LIGHTNING ping list)
To: cripplecreek
I also have Photoshop CS3 and would love some pointers.
23
posted on
04/29/2012 11:53:31 AM PDT
by
Army Air Corps
(Four Fried Chickens and a Coke)
To: KevinDavis
24
posted on
04/29/2012 11:54:47 AM PDT
by
Army Air Corps
(Four Fried Chickens and a Coke)
To: Army Air Corps
25
posted on
04/29/2012 12:10:40 PM PDT
by
cripplecreek
(What does it profit a man if he gains the whole world but loses his soul?)
To: cripplecreek
Thanks! I do the same thing when I create an effect layer - I store it an reuse or tweak it.
26
posted on
04/29/2012 12:16:26 PM PDT
by
Army Air Corps
(Four Fried Chickens and a Coke)
To: SunkenCiv
27
posted on
04/29/2012 12:18:31 PM PDT
by
BIGLOOK
To: SunkenCiv
That’s a proctoscope photo of my digestive tract after consuming Habaneros.
To: Rebelbase
To: shibumi; PGalt; moose07; cripplecreek; Erasmus; Army Air Corps
30
posted on
04/29/2012 4:21:52 PM PDT
by
SunkenCiv
(FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
To: samtheman; blueunicorn6; greenhornet68; 2nd Bn, 11th Mar; ml/nj; Erasmus; Ernest_at_the_Beach; ...
31
posted on
04/29/2012 4:21:52 PM PDT
by
SunkenCiv
(FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
To: BIGLOOK
32
posted on
04/29/2012 4:23:28 PM PDT
by
SunkenCiv
(FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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