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Astronomy Picture of the Day -- The New World Atlas of Artificial Sky Brightness
NASA ^ | Thursday, June 30, 2016 | (see photo credit)

Posted on 06/29/2016 11:03:43 PM PDT by SunkenCiv

Explanation: How far are you from a naturally dark night sky? In increasing steps, this world map (medium | large) shows the effect of artificial night sky brightness on the visual appearance of the night sky. The brightness was modeled using high resolution satellite data and fit to thousands of night sky brightness measurements in recent work. Color-coded levels are compared to the natural sky brightness level for your location. For example, artificial sky brightness levels in yellow alter the natural appearance of the night sky. In red they hide the Milky Way in an artificial luminous fog. The results indicate that the historically common appearance of our galaxy at night is now lost for more than one-third of humanity. That includes 60% of Europeans and almost 80% of North Americans, along with inhabitants of other densely populated, light-polluted regions of planet Earth.

Thursday, June 30, 2016

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; lightpollution; science
[Image Credit & License: F. Falchi et al., Light Pollution Atlas, ISTIL]

1 posted on 06/29/2016 11:03:43 PM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; disndat; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...

It's a bird! No, it's a plane! No, it's some cipher grinding a political axe!
The Big One

2 posted on 06/29/2016 11:04:59 PM PDT by SunkenCiv (I'll tell you what's wrong with society -- no one drinks from the skulls of their enemies anymore.)
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To: SunkenCiv

Very interesting post. Thank you.


3 posted on 06/29/2016 11:09:58 PM PDT by Mr Apple ( HILLARY CLINTON >>> COOKIES, CANDIES, CAKE, DESSERTS & CASHEWS....the WALRUS LOOK)
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To: SunkenCiv

We took our motor coach to Death Valley last year.

The millions of stars out at 2am were breathtaking

As an east coast guy I had never seen such a show.


4 posted on 06/29/2016 11:12:30 PM PDT by Noob1999
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To: SunkenCiv

Fascinating stuff.

As a suburbanite, I can only imagine what the night sky looks like in the Boonies. It must be glorious.


5 posted on 06/29/2016 11:24:45 PM PDT by Jack Hammer
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To: SunkenCiv
This map illustrates one of the many reasons why I love living in the western U.S. I remember a number of years ago while driving from Las Vegas back home (Denver) at night we pulled off the road somewhere in Utah because it was so dark the view of Comet Hale-Bopp was spectacular. Even in Denver it had looked amazing, but out in the desert with no cities nearby it was awe-inspiring as the tail stretched visibly across a huge part of the sky.

Even closer to home, at high elevation in the mountains the view is very similar. I love going to the top of Independence Pass at night in the summer (over 12,000 feet) and just being awestruck by the view of the Milky Way. There's a parking lot at the summit, so it's a perfect stargazing spot.

6 posted on 06/29/2016 11:31:35 PM PDT by noiseman (The only thing necessary for the triumph of evil is for good men to do nothing.)
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To: Noob1999

I’ve been through DV several times on the way from here to there. Tough place but very interesting to see.


7 posted on 06/30/2016 2:10:27 AM PDT by Gaffer
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To: SunkenCiv

I was in Somalia for six months in the early 1990s during the US military’s Operation Restore Hope. I had no idea what I had been missing regarding the night sky. It was mind-blowing to see all the stars, constellations, and planets so clearly. There was virtually no night artificial light sources in most places in the country.


8 posted on 06/30/2016 3:32:53 AM PDT by ImNotLying (The Constitution is an instrument for the people to restrain the government...Patrick Henry)
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To: SunkenCiv

One more reason to hate living in the South... I miss the stars at night. I remember all the times I used to go camping in the mountains, soooo many stars..

sigh... 10 more years til freedom.


9 posted on 06/30/2016 3:57:40 AM PDT by wyowolf (Be ware when the preachers take over the Republican party...)
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To: SunkenCiv

Yep.

If they don’t like it, let ‘em move to N Korea.

It’s nice and dark there. :-)


10 posted on 06/30/2016 5:34:02 AM PDT by left that other site (You shall know the Truth, and The Truth Shall Set You Free.)
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To: SunkenCiv

I bet they can see it in North Korea!......................


11 posted on 06/30/2016 6:12:21 AM PDT by Red Badger (Make America AMERICA again!.........................)
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To: SunkenCiv

Thank you so much for the post and ping, Mr. Civilizations.

This is the very first time I ever saw anything like this, and I’m just delighted with it. :-)

As usual, your choice of APODs is simply amazing.


12 posted on 06/30/2016 7:04:22 PM PDT by TheOldLady (Pistol-Packin' Elderly Lady -- Don't mess with me.)
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To: TheOldLady

:”)


13 posted on 06/30/2016 7:11:33 PM PDT by SunkenCiv (I'll tell you what's wrong with society -- no one drinks from the skulls of their enemies anymore.)
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To: TheOldLady

To be fair, I don’t choose ‘em, I just plaster ‘em all over FR. ;’) Thanks ToL for the kind remarks!


14 posted on 07/01/2016 8:31:50 AM PDT by SunkenCiv (I'll tell you what's wrong with society -- no one drinks from the skulls of their enemies anymore.)
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To: SunkenCiv

Awwww, Mr. Civilizations! You and I have been besties for
the past ten years at least. You can do no wrong, my friend.

Please keep up the great work. And you’re most welcome.


15 posted on 07/01/2016 12:10:10 PM PDT by TheOldLady (Pistol-Packin' Elderly Lady -- Don't mess with me.)
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To: SunkenCiv

I suspect the International Dark Sky Association is probably fighting a losing battle, but I’ve participated in their studies with my astronomy club years ago. FYI,

http://darksky.org/


16 posted on 07/01/2016 12:46:01 PM PDT by Chaguito
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