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 August, 2014 campaign!

Citizen scientists from around the world have contributed 15,504 data points so far this year - thank you! Read more in our Globe at Night Newsletter.

Can you find Hercules?

Hercules the hero of Greece can be best seen by looking up and to the North in the summer. By finding the brightest star Vega by looking North, and looking just west of that you can make out the keystone or body the body of Hercules. The head of Hercules will be to the South, and his kneeling legs will be pointing northward.

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

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

twitter facebook

Globe at Night in the News!

Globe at Night webapp

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

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.

What is Light Pollution?

Too much light pollution has consequences: it washes out starlight in the night sky, interferes with astronomical research, disrupts ecosystems, has adverse health effects and wastes energy. Learn more...

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.