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Space Science Digital > Blog > Astronomy > Globe at Night asks you to help study light pollution
Astronomy

Globe at Night asks you to help study light pollution

By Aimee Daly March 11, 2023 6 Min Read
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Contents
Globe at Night6 easy steps to participateExample of a star map for MarchKelly Kizer WhittAbout the Author:
View at EarthSky Community Photos. | Jeremy Likness captured this image of the constellation Orion from Monroe, Washington, on January 8, 2023. Jeremy wrote: “It’s the clearest I’ve ever resolved this constellation with a camera. You can see the great Orion Nebula, Flame Nebula, Running Man Nebula and even catch a hint of Barnard’s Loop.” Thank you, Jeremy! You can participate in the March campaign for Globe at Night by looking for Orion in your own skies. How many of its stars can you see?

Globe at Night

From 2011 to 2021, the average increase in brightness of the night skies over North America and Europe was 9.6% per year. That means that, for many of us, the stars are disappearing. In an effort to raise awareness of light pollution – and to assess the state of our night skies – an international citizen-science campaign called Globe at Night wants you to survey your sky. The project runs every month around new moon, when the sky is darkest.

From March 13 to 22, 2023, Globe at Night is asking that you look toward the easy-to-find constellation Orion the Hunter, to determine how many of Orion’s stars you can see in your sky.

Last chance to get a moon phase calendar! Only a few left. On sale now.

6 easy steps to participate

There are only six easy steps required to participate. Here’s what Globe at Night asks you to do:

1. During the campaign dates, go outside more than an hour after sunset (8-10 pm local time). The moon should not be up. Let your eyes become used to the dark for 10 minutes before your first observation.
2. Use a night sky app on your phone outside to find the constellation [Orion for March] from where you are.
3. Go to the Globe at Night Report page to start to enter Globe at Night measurements. Make sure you are in “Nighttime version”.
4. With a smart phone, the app will put in the date, time, location (latitude/longitude) automatically. Otherwise please type them in. For your location, type the street address closest to your observation along with the city, state or province and country.
5. Choose the star chart that looks most closely to what you see toward your constellation. That is, what is the faintest star you can see in the sky and find in the chart?
6. Chose the amount of cloud cover at the time of observation and then click on the “submit data” button.

That’s it! I participated in February’s campaign using my smart phone. It was easy. From my front lawn in the suburbs, I could see stars to magnitude 4. After I submitted my data, I learned that I was the 123,090th citizen scientist to submit data.

Example of a star map for March

Each month, Globe at Night gives the Northern and Southern Hemispheres different options for which constellation to observe. For March, besides Orion you also have the option of Gemini in the Northern Hemisphere and Canis Major in the Southern Hemisphere. Visit this page to see what constellations they suggest for the other months of the year.

7 charts from Globe at Night showing Orion with fewest stars and adding more till star-filled.
View larger. | Here are the options you’ll see when you participate in Globe at Night’s survey of the sky in March. How many of Orion’s stars can you see from where you live? Look at the charts and compare them to your sky. A very light-polluted sky will see the fewest stars, and a truly dark sky will show stars down to magnitude 6 or more. Image via Globe at Night.

Bottom line: Participate in the March campaign for Globe at Night by looking at Orion and reporting how many of its stars you can see.

Kelly Kizer Whitt

View Articles

About the Author:

Kelly Kizer Whitt has been a science writer specializing in astronomy for more than two decades. She began her career at Astronomy Magazine, and she has made regular contributions to AstronomyToday and the Sierra Club, among other outlets. Her children’s picture book, Solar System Forecast, was published in 2012. She has also written a young adult dystopian novel titled A Different Sky. When she is not reading or writing about astronomy and staring up at the stars, she enjoys traveling to the national parks, creating crossword puzzles, running, tennis, and paddleboarding. Kelly lives with her family in Wisconsin.

TAGGED: asks, earth, Globe, light, night, pollution, space, study

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Aimee Daly March 11, 2023
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