Search Options
close
Search the following clips:
All Clips
Everyone's Clips
My Guides
Sign Up
Install
Learn More
Login
Losing the Dark
ruralart
follow
5
5-4-2008 5:35 PM
260 views
tags:
astronomy
,
night
,
dark
,
sky
,
lights
ruralart
says:
Maps showing the loss of dark over the last 50 years or so.
1 Comment
|
Add a Comment
5-4-2008
6:56 PM
alanocu
nice clip - thank you!
Login
to Comment. Not a member yet?
Sign up
Related Clips
Quiet Explosion: Object Intermediate Betwe...
Planet and star in puzzling waltz
Apollo 14 astronaut claims aliens HAVE mad...
Asteroid heading our way
Are We Living in a Giant Void?
Bio-Earth: Are Planets Living Super-Organi...
Now the Moon reveals its water
More clips from
ruralart
Obama - Innocence, Optimism and Reality - ...
Photographs of War... or Not?
Dying with Grace
Today's Top Clips
Hero
Do Not Read This !
Extinguishing the Fear at the Roots of Anxiety
'Last Lecture' professor dies at 47
How Many Silicon Valley Startup Executives Are Hopped Up On Provigil?
Scientists Find the Trigger of the Northern Lights
Thinking Ahead
Unknown insects found in 110-million-year-old amber in Spain
High Speed Photography
Intel: Human and computer intelligence will merge in 40 years
visit the
Top Clips page
View the Top Clips from
May 4, 2008
Embed This Clip In Your Site...
<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/b9ce5c83-4c98-4b82-8c5a-6e479c2bfd13/D1AECE81-44F6-4BCD-B78D-96CF476F6DFE/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.yosemite.org/naturenotes/NALightPollution.htm" href="http://www.yosemite.org/naturenotes/NALightPollution.htm" style="font-size: 11px;">www.yosemite.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.yosemite.org/naturenotes/NALightPollution.htm"><STRONG>Growth of Light Pollution in North America</STRONG></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.yosemite.org/naturenotes/NALightPollution.htm"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/www.yosemite.org/img/604BC789-033D-45ED-BA6D-A663B61EEBE3" alt="" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.yosemite.org/naturenotes/NALightPollution.htm"><FONT size="2" face="Verdana, Arial, Helvetica, sans-serif">The maps show artificial night sky brightness and are based on upward light measured by the Defense Meteorological Satellite Program after accounting for propagation and scattering of that light in the atmosphere. </FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.yosemite.org/naturenotes/NALightPollution.htm"><FONT size="2" face="Verdana, Arial, Helvetica, sans-serif">The night sky in all areas here which are not black (but have other colors) is considered polluted. Today, two thirds of the USA's population have lost naked eye visibility of the Milky Way.</FONT></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.yosemite.org/naturenotes/NALightPollution.htm"><FONT size="2" face="Verdana, Arial, Helvetica, sans-serif">The colors indicate the artificial night sky brightness as a fraction of the average natural night sky brightness.</FONT></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;"> </td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/D1AECE81-44F6-4BCD-B78D-96CF476F6DFE/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>
Clipmarks
Home
New Clips
Top Clips
Dashboard
Popular Topics
News
Life
Science
Technology
Entertainment
Get Started
Sign Up
Install Clipping Tool
How Clipping Works
Clip-to-Blog™
ClipSearch
Tools and Resources
FAQ
ClipWeek
Top Clippers
Top Tags
Site Map
About Clipmarks
About Us
Contact
Blog
Copyright
Privacy
EULA
OK