“Satellite images of the Earth at night are taken after midnight, when most people are sleeping. They therefore do not provide a correct picture of light use in the early evening. Our group of citizen scientists and researchers has previously developed an app to count light sources along street segments – from illuminated windows and advertising signs to street lamps and traffic lights. As a part of Science Year 2023 – Our Universe, we are have modified our app to address this question, and we are inviting you to count lights again this fall! A twist this year is that in addition to larger local campaigns (>3 participants), it will be possible to take part by surveying a single street…

From the end of August 2021 until mid-November 2021, more than 200 citizen scientists counted and classified almost a quarter of a million artificial light sources in public streets and squares. While counting lights, they have walked 645 kilometers and covered a total of 22 square km in different field sites in Germany and worldwide…”

See also – Welcome to DarkHotels. “This tool allows you to find hotels/Airbnbs for deep Nature Reset and stargazing by combining the map of light pollution with availability data from Booking.com and Airbnb. We are experiencing extremely high traffic, we ask for your patience as performance may be affected.”