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Astronomy Picture of the Day -- A Luminous Night
NASA ^ | August 15, 2014 | (see photo credit)

Posted on 08/15/2014 6:54:51 PM PDT by SunkenCiv

Explanation: What shines in the world at night? Just visible to the eye, a rare electric blue glow spread along the shores of Victoria Lake on January 16, 2013. Against reflections of a light near the horizon, this digitally stacked long exposure recorded the bioluminescence of Noctiluca scintillans, plankton stimulated by the lapping waves. Above, the night skies of the Gippsland Lakes region, Victoria, Australia shine with a fainter greenish airglow. Oxygen atoms in the upper atmosphere, initially excited by ultraviolet sunlight, produce the more widely seen fading atmospheric chemiluminescence. Washed out by the Earth's rotation, the faint band of the southern summer Milky Way stretches from the horizon as star trails circle the South Celestial Pole.

August 15, 2014

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; science
[Credit & Copyright: Phil Hart]

1 posted on 08/15/2014 6:54:51 PM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
The Big One

2 posted on 08/15/2014 6:56:02 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv

Didn’t we see this one a few days ago?


3 posted on 08/15/2014 6:59:36 PM PDT by cripplecreek ("Moderates" are lying manipulative bottom feeding scum.)
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To: SunkenCiv
New photo from Rosetta.


4 posted on 08/15/2014 7:02:50 PM PDT by cripplecreek ("Moderates" are lying manipulative bottom feeding scum.)
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To: cripplecreek

Is that Rosetta’s Stone?


5 posted on 08/15/2014 7:07:15 PM PDT by SgtBob (Freedom is not for the faint of heart. Semper Fi!)
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To: SgtBob

LOL in a sense.


6 posted on 08/15/2014 7:08:47 PM PDT by cripplecreek ("Moderates" are lying manipulative bottom feeding scum.)
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To: cripplecreek

C’mon, CC...I ain’t gotta put a ;-) after that one....


7 posted on 08/15/2014 7:10:24 PM PDT by SgtBob (Freedom is not for the faint of heart. Semper Fi!)
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To: SunkenCiv

Beautiful! Can’t get over how different the stars look in Australia.


8 posted on 08/15/2014 7:16:29 PM PDT by Ken H
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To: Ken H

You can see the Vegemite Galaxy from down there.


9 posted on 08/16/2014 4:56:32 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: cripplecreek
FWIW, the posted installment for 8/15 is linked here ... It's more so a terrestrial photo, with a touch of astronomy.

(The interesting thing is how they got the rare "pinball meteor" at the RHS ;)

10 posted on 08/16/2014 12:36:31 PM PDT by mikrofon (APOD Bump)
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