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Natural Environment How Human History has been impacted by the environment, science, nature, geography, weather, and natural phenomena


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Old December 6th, 2012, 11:27 AM   #1

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Earth at Night: 2012 version


This year, NASA has updated one of the most ever famous picture of Earth, do you remember?

*2000 version

Click the image to open in full size.

Large: http://apod.nasa.gov/apod/image/0011...2_dmsp_big.jpg



*2012 version NASA - NASA-NOAA Satellite Reveals New Views of Earth at Night

Click the image to open in full size.

Large: http://www.nasa.gov/images/content/7...0f3c09fb_o.jpg
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Old December 6th, 2012, 11:32 AM   #2

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There seems to be an awful lot of light in the western deserts of Australia; maybe some aliens have set up a colony there.
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Old December 6th, 2012, 11:42 AM   #3

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I see a similar image on the BBC ~

Click the image to open in full size.

BBC News - Suomi satellite pictures Earth in black

This one from Mashable looks more beautiful to my eyes ~

Click the image to open in full size.

http://mashable.com/2012/12/05/black...e-nasa-images/

Last edited by Jhangora; December 6th, 2012 at 11:49 AM. Reason: adding an image
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Old December 7th, 2012, 04:10 AM   #4

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North America 2012 seems to have less light than the first image.
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Old December 7th, 2012, 04:16 AM   #5

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Quote:
Originally Posted by Brisieis View Post
North America 2012 seems to have less light than the first image.
You can say that about most of the planet in 2012, seems "darker" to me overall. Perhaps the 2000 picture might have been affected by millenium celebrations?
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Old December 7th, 2012, 04:18 AM   #6

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Quote:
Originally Posted by Belisarius View Post
You can say that about most of the planet in 2012, seems "darker" to me overall. Perhaps the 2000 picture might have been affected by millenium celebrations?
Maybe. Or it just might be a matter of lighting (as in camera lighting) no two pictures are the same after all.
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Old December 7th, 2012, 04:19 AM   #7

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Quote:
Originally Posted by Linschoten View Post
There seems to be an awful lot of light in the western deserts of Australia; maybe some aliens have set up a colony there.
Thats a very good observation; what's going on there?
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Old December 7th, 2012, 09:56 AM   #8

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According to NASA, they are wildfires.


In regard to lights, it is clear that 2000 picture's lights were enhanced.

The ones in 2012 are less spectacular, but more defined.
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Old December 7th, 2012, 10:01 AM   #9

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This is not what you would really see by eye from outer space. The lights are clearly enhanced. I would also be careful when comparing the intensities between different regions; it appears as if some regions were enhanced more strongly than others.
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Old December 7th, 2012, 10:08 AM   #10

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It is amazing how the North American continent appears to be split in half, with a strongly lit Eastern half and a dark Western half (with the exception of the coastline). What has happened to the sea around South Korea? Is that an artifact?
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