The Globe at Night program is an international citizen-science campaign to raise public awareness of the impact of light pollution by inviting citizen-scientists to measure their night sky brightness and submit their observations to a website from a computer or smart phone. It's easy to get involved - just follow these 5 Simple Steps!

Image courtesy Babak A. Tafreshi

Join us for the October, 2014 campaign!

Citizen scientists from around the world have contributed 17,223 data points so far this year - thank you! Read more in our Globe at Night Newsletter.

The campaign dates have been announced for 2015!

Can You Find Pegasus?

Pegasus, the winged horse ridden by Perseus to rescue Andromeda from the sea monster Cetus is easiest to find during Autumn. The easiest way to find Pegasus is to look overhead and find the great square of Pegasus found adjacent to the milky way. This great square is the body of Pegasus and the body and head extend outwards.

Practice finding all the Globe at Night Constellations or review the Magnitude Charts.

The current campaign is using the Constellation Pegasus. Check out the dates and constellations for our other campaigns during all 12 months of 2014.

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Globe at Night in the News!

Globe at Night webapp

The tenth campaign of 2014 is coming soon! Whether you use a smartphone, tablet or computer, you can submit your data in real time with our webapp! Now available in 26 languages.

Did you know?

That about ⅓ of Globe at Night data has been submitted with a mobile device this year? Our partnership with the makers of two mobile apps has greatly boosted the mobile numbers, but even without those data points, the number of people using the web app with a mobile device continues to climb each year. Find out more interesting information about this year's campaigns from our new Globe at Night Interactive Infographic!

Resources for 2014

Globe at Night is truly an international campaign, providing Activity Guides, Postcards, and the data reporting webapp in more than 20 languages. These are all available to download from our Resources page.

Related phone apps

Globe at Night is pleased that two native smartphone apps have become available that integrate well with our campaigns. If you have an Android phone, check out the Loss of the Night app. And if you have an iPhone 4S or later, take a look at the Dark Sky Meter app.

See how your region is doing in 2014 below. If you don't see very many data points, consider going outside tonight and contributing your own! Compare to other regions or previous years with our regional map generator.