Street lamps, illuminated signs and buildings – lights at night improve safety and make cities more attractive, but have also been shown to have negative effects for humans and animals. The more light there is, the fewer stars you can see in the night sky. How many stars can you see where you live? 

Our use of artificial light has dramatically changed the environment in large parts of the world. Scientific studies have shown unexpected and worrying effects on the biology of many organisms as well as on whole ecosystems, but also on human health. The problems of artificial light are commonly referred to as light pollution.

In the Star-Spotting Experiment, thousands of pupils, members of outdoor associations, other clubs and members of the public in Sweden, UK, Ireland and Spain contribute to scientific research about light pollution by counting stars in the sky, while discovering the level of light pollution in their own  neighbourhood.

The scientific leader of the project is Urban Eriksson, a researcher and senior lecturer in physics with a focus on astronomy education at Lund University and Kristianstad University in Sweden.

 

Urban Eriksson, researcher and senior lecturer Lunds universitet och Högskolan Kristianstad. Foto: Lunds universitet.

For teachers

The Star-Spotting Experiment covers a range of curriculum subjects and can be used with both primary and secondary classes as well as for adult education courses.

 

Participating countries

The Star-Spotting Experiment is run in the following countries: 

Sweden (Public & Science, VA) as a part of European Researchers’ Night in Sweden under the name ”Stjärnförsöket”.

United Kingdom (Natural History Museum, London & Glasgow Science Centre).

Ireland (University College Cork & Trinity College).

Spain (Fundación Descubre, ESCIENCIA, La Palma Centre & Fundación Madri+d) under the name ”Cuenta Estrellas”.

 

Timescale

  • February 2019: Project start in Sweden. 
  • August/September 2019: Project start in UK, Ireland and Spain.
  • European Researchers’ Night (27-28 September 2019) the results from the data collected during early spring will be published.
  • Spring 2020: Publication of results.

How it works:

You will need:

  • A cardboard tube (e.g. a kitchen paper roll), a bit of string, tape and a protractor to make your measuring tube and a compass.
  • Download the app ”The Star-Spotting Experiment”/”Stjärnförsöket” to your mobile or tablet.
  • Go out at least one hour after sunset and wait for ten minutes to get your eyes used to the darkness. Then point the tube in nine different directions in the sky and count how many stars you can see through the tube. Report this in the app along with information about the day, time, location, weather etc.

 

For further information

Contact the project managers in Sweden: [email protected]

 


Instructional films

Press ”CC” to turn on English subtitles.

 


The Star-Spotting Experiment is created by the non-profit organisation Public & Science (VA), the National Resource Center for Physics Education (NRCF), Lund University, Kristianstad University, the Swedish National Space Agency, and the two science centres House of Science (Vetenskapens hus) and Umevatoriet, Sweden. The project is run in collaboration with Fundación Descubre, Esciencia, La Palma Centre and Fundación madri+d in Spain, University College Cork and Trinity College in Ireland and Natural History Museum in London, UK.