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!
Perseus the slayer of Cetus is most easily seen rising in the East in the winter. The constellation is most easily identifiable as what almost appears to be a wishbone of brightest stars, with the brightest being the center and chest of Perseus. The legs of Perseus are pointing southward and are the forked part of the wishbone and the body and head are the straight line leading up northward. It is easy to find Perseus by either looking southward from Cassiopeia or just to the left of Taurus the Bull.
The December 2021 campaign is using the Constellation Perseus. Check out the dates and constellations for our other campaigns during all 12 months of 2021.
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 20 Projects of 2020! 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.
Globe at Night’s “Adopt-a-Street” program
Are you passionate about Dark Skies? Consider coordinating an Adopt-a-Street program in your area during the 2021 Globe at Night campaigns.
What is the Adopt-a-Street Program?
Globe at Night offers a “Call to Action” for those who want to take more measurements during the campaigns. Children and adults can “Adopt a Street” in their town to take visual and possibly sky-brightness meter measurements during the Globe at Night campaigns. The strategy is for people to adopt a different major or semi-major street and take measurements every mile or so for the length of the street (or for as long as they can). The grid of measurements will canvas the town, allowing for research later in comparison to wildlife, health, energy consumption and cost, among other things.
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.
