Join the Worldwide GLOBE at Night 2011 Campaign

GLOBE at Night encourages citizen-scientists worldwide to record the brightness of the night sky. During 2 weeks of moonless evenings, children and adults match the appearance of a constellation (Leo in the northern hemisphere and Crux or Leo in the southern hemisphere) with 7 star charts of progressively fainter stars found at Participants then submit their choice of star chart online with their date, time and location to help create a light pollution map worldwide.

The GLOBE at Night 2011 campaign dates are March 22-April 4, 2011, (for the Northern Hemisphere) and March 24-April 6, 2011, (for the Southern Hemisphere). Over 60,000 measurements have been contributed from more than 100 countries over the last 5 years of two-week campaigns.

This year children and adults can submit their measurements in real-time if they have a smart phone or tablet. To do this, use the web application at With smart phones and tablets, the location, date and time are put in automatically. And if you do not have a smart phone or tablet, there are user-friendly tools on the GLOBE at Night report page to find latitude and longitude.

Through GLOBE at Night, students, teachers, parents and community members are amassing a data set from which they can explore the nature of light pollution locally and across the globe. Make a difference and join the GLOBE at Night efforts in 2011. Activity packets, one-page flyers and postcards advertising the campaign are available at

Please email any questions about GLOBE at Night to Connie Walker at

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