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Wednesday, March 21, 2012


Globe at Night Light Pollution Survey for March 13-22

North-western sky at 9 pm local daylight saving time in Australia showing Orion.

Woops, nearly missed this!

Globe at Night, the international light pollution survey, is running its Third survey this year from March 13-22 (it's US HQ'd that means we Australians/New Zealanders have until the 23rd). There is one more to come on April 11-20. Visit their website for easy to follow instructions and charts to estimate how dark your sky is.

Basically, an hour or so after sunset (8-10 pm) head out, look to the north to find Leo, (if you are in the northern hemisphere) or south to find Crux (for us southern hemisphere types) or Orion (for everybody) then check how many stars are visible, and report your observations. It's a great excuse to get outdoors and look at the sky. You might even see the International Space Station or an Iridium flare.

This year you can submit your results a smart phone or tablet. To do this, you can use the web application at www.globeatnight.org/webapp/. Globe at Night is also on Facebook and Twitter.

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Thank you for the post from GLOBE at night.
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