Invitation to "ERN-Environmental Engagements: talks"
SoSe 2021

Invitation to "ERN-Environmental Engagements: talks"

 "Light pollution -

an interdisciplinary view on the impact of artificial light at night"

Talk by Stefan Wallner,

Department of Astrophysics, University of Vienna

-- hosted by the Environmental Research Network --

When: 24.03.2021, 17:00-18:30

Where: Zoom [
Meeting-ID: 936 9108 2489, Password: 152675]; no registration required


About the talk:

The term ’light pollution’ characterises the influence of artificial light on the natural dark sky. It is a worldwide issue and can be dated back at least to the beginning of the 20th century, caused by light coming from the ground and comprises phenomena like light trespass, light scattering in the atmosphere and huge 'domes' of light around cities. The ever-worsening phenomenon impairs not only the visibility of objects on the night sky, but also inhibits the dormancy of plants, disrupts nocturnal activities of animals and provides negative effects on human health. In the last decade, light pollution research became of major importance and grew to be highly multi-disciplinary. The talk will elucidate the topic from several perspectives, including from an astronomical, ecological and environmental point of view, its global status, legal situation, results of current research activities and potential actions against further increases.


Language: english

About the speaker:

Stefan Wallner is an astrophysicist, currently working at the Department of Astrophysics, University of Vienna (Austria) and the Slovak Academy of Sciences, Bratislava (Slovak Republic). His research field is the topic of measuring, modelling and quantifying light pollution, skyglow and atmospherical effects. Since 2019 he is the project manager for light pollution research at the University of Vienna.

About Environmental Engagements: talks

This summer semester 2021 the Environmental Research Network (ERN) starts its new series of talks under the title “Transformative Change towards Sustainable Futures”. Bringing together environmental research experts from a variety of fields, it highlights the diversity of perspectives and know-how we need in order to make radical shifts towards more sustainable pathways.

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Save the date for our upcoming talk:
  • 21.04.2021, 17:00-18:30 "The economics of the Climate Challenge" (english) - Alexandra Brausmann, University of Vienna
Forschungsnetzwerk Umwelt / Environmental Sciences Research Network
Judith Mühlbacher
Judith Mühlbacher
Department für Umweltgeowissenschaften | Althanstraße 14, UZA2, A-1090 Wien |