GLOBE at Night: Help Track Light Pollution


	GLOBE at Night: Help Track Light Pollution

Mohir

3-19-2009 10:03 AM

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tags:

pollution, stars

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<B> Explanation: </B>
How many stars can you see?  Through next week, the 
<A href="http://www.globe.gov/GaN/" linkindex="5">GLOBE at Night</A> project invites 
<A href="http://antwrp.gsfc.nasa.gov/apod/ap080722.html" linkindex="6">people from all over the world</A> 
to go outside at night, look up, and see!  
Specifically, people are invited to go out an hour after sunset and look for the 
<A href="http://en.wikipedia.org/wiki/Orion_(constellation)" linkindex="7">constellation Orion</A> toward the west.  
Rather than count 
<A href="http://antwrp.gsfc.nasa.gov/apod/ap090210.html" linkindex="8">Orion's stars</A> directly, however, the 
<A href="http://www.globe.gov/GaN/student.html" linkindex="9">GLOBE at Night</A> 
website has made things easier by providing several 
<A href="http://www.globe.gov/GaN/observe_magnitude.html" linkindex="10">star charts</A> 
to which you can compare your 
<A href="http://www.globe.gov/GaN/observe_finder.html" linkindex="11">view of Orion</A>.  
Possible matches extend from a 
<A href="http://www.globe.gov/GaN/images/40N_m3_b.jpg" linkindex="12">bright sky</A> 
where only a few Orion stars are visible, to a very 
<A href="http://www.globe.gov/GaN/images/40N_m7_b.jpg" linkindex="13">dark sky</A> 
where over 100 Orion stars are visible.
<A href="http://www.globe.gov/GaN/analyze.html" linkindex="14">Pictured above</A> 
are results from 
<A href="http://www.noao.edu/outreach/press/pr08/pr0805.html" linkindex="15">last year's sky observation campaign</A>.
Since 2009 is the 
<A href="http://www.astronomy2009.org/" linkindex="16">International Year of Astronomy</A>, 
it is hoped that an even better map can be created this year.  
By <A href="http://antwrp.gsfc.nasa.gov/apod/ap040808.html" linkindex="17">participating</A> 
in this easy and fun activity, you are helping 
<A href="http://antwrp.gsfc.nasa.gov/apod/ap081005.html" linkindex="18">humanity</A> to better 
<A href="http://www.darksky.org/ " linkindex="19">understand</A> how 
<A href="http://antwrp.gsfc.nasa.gov/apod/ap010827.html" linkindex="20">light</A> 
<A href="http://www.youtube.com/watch?v=s9rhdq1DRMM" linkindex="21">pollution</A> 
is changing across the Earth.
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