Globe at Night is an international citizen-science campaign to raise public awareness of the impact of light pollution by inviting citizen-scientists to measure & submit their night sky brightness observations. It's easy to get involved - all you need is computer or smart phone & follow these 6 Simple Steps!

Image courtesy NSF’s NOIRLab

Join us for the February, 2022 campaign!

In 2021 we received 25,527 observations! Thank you for helping us reach our goal of 25,000 data points for 2021! And we’re off to a great start for 2022 with 326 observations so far!

Check out the campaign dates & constellations for 2022!

Can you find Orion?

Orion looks very much like a person. First, you should spot Orion’s Belt, which is made of three bright stars in a straight line. One of Orion’s legs is represented by the bright star Rigel, one of the brightest stars in the night sky. His two shoulders are made of the stars Bellatrix and Betelgeuse. You can see Betelgeuse’s reddish color without a telescope.

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

The February 2021 campaign is using the Constellation Orion. Check out the dates and constellations for our other campaigns during all 12 months of 2021.

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How you can make a difference by participating in Globe at Night and why...

Globe at Night webapp

Whether you use a smartphone, tablet or computer, you can submit your data in real time with our webapp - now available in 28 languages! Help us make 2021 a record year!

For Libraries

SciStarter and Arizona State University created a customizable citizen science kit with everything needed for patrons to engage in Globe at Night. Access all the materials and details at SciStarter.org/Library-Resources


Globe at Night and SciStarter

Globe at Night is proud to be one of SciStarter's Top 21 Projects of 2021! Register with SciStarter to take advantage of their tools to automatically track your contributions through a centralized SciStarter dashboard. Check out our project page to learn more.


Resources for 2022

Globe at Night is truly an international campaign. Our Activity Guides, Postcards, and the data reporting webapp have been translated into many 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. The Loss of the Night app is a free app. available for Android & iOS. And if you have an iPhone that can run iOS 10 or later, take a look at the Dark Sky Meter app, just $1.99 in the App Store.

See how your region is doing this year 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.