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Astronomy Picture of the Day -- A Tale of Two Hemispheres
NASA ^ | July 30, 2011 | (see photo credit)

Posted on 07/29/2011 9:53:38 PM PDT by SunkenCiv

Explanation: A quest to find planet Earth's darkest night skies led to this intriguing panorama. In projection, the mosaic view sandwiches the horizons visible in all-sky images taken from the northern hemisphere's Canary Island of La Palma (top) and the south's high Atacama Desert between the two hemispheres of the Milky Way Galaxy. The photographers' choice of locations offered locally dark skies enjoyed by La Palma's Roque de los Muchachos Observatory and Paranal Observatory in Chile. But it also allowed the directions to the Milky Way's north and south galactic poles to be placed near the local zenith. That constrained the faint, diffuse glow of the plane of the Milky Way to the mountainous horizons. As a result, an even fainter S-shaped band of light, sunlight scattered by dust along the solar system's ecliptic plane, can be completely traced through both northern and southern hemisphere night skies.

July 30, 2011


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; science
[Credit & Copyright: Tunç Tezel and Stéphane Guisard (TWAN)]

1 posted on 07/29/2011 9:53:41 PM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...

2 posted on 07/29/2011 9:56:24 PM PDT by SunkenCiv (Yes, as a matter of fact, it is that time again -- https://secure.freerepublic.com/donate/)
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To: SunkenCiv

It’s a sign....

It means... vote for Sarah!


3 posted on 07/29/2011 10:09:42 PM PDT by GeronL (The Right to Life came before the Right to Happiness)
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To: SunkenCiv

These panoramas are always difficult to view. In the north, I can see the big dipper most easily, on the left, then looking along the arc of the zodical light I can see Scorpius at bottom center, then Virgo, Leo, and Castor and Pollux of Gemini, at lower right. Then Vega in Lyra center left.

To view the southern half I flipped it using MS Paint. The large and small Magellanic clouds are prominent, and above them is the star Achernar, and to the left Canopus. Below the arch of the Zodiacal band is the Andromeda Nebula, and I believe the bright smudge at the top of the band is Jupiter. I think I see Aldeberan in Taurus along with the Pleaides, but this region is rather indistinct.


4 posted on 07/30/2011 12:04:35 AM PDT by dr_lew
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To: SunkenCiv

Just goes to show. Everything is based on the sine wave...


5 posted on 07/30/2011 4:16:43 AM PDT by raybbr (People who still support Obama are either a Marxist or a moron.)
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To: SunkenCiv

Oooooooooooo...NICE!


6 posted on 07/30/2011 6:00:32 AM PDT by left that other site (Psalm 122:6)
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To: raybbr

Sine, sine, everywhere a sine...


7 posted on 07/30/2011 11:30:58 AM PDT by SunkenCiv (Yes, as a matter of fact, it is that time again -- https://secure.freerepublic.com/donate/)
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To: SunkenCiv
Sine, sine, everywhere a sine...

Very good! Thanks for the laugh.

8 posted on 07/30/2011 12:10:08 PM PDT by raybbr (People who still support Obama are either a Marxist or a moron.)
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