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ALAN Conference Series

ALAN 6 will take place from 16-18.06.2020 in Lleida, Spain.

Night Sky Data to the People!

A new website presents citizen science data

Touring Exhibition

Our touring exhibition with 15 posters can be borrowed for events!

'Loss of the Night' App

The 'Loss of the Night' app measures sky brightness! Take part in a world-wide citizen science project that measures star visibility and light pollution. The app is free!

City Night Time Lapse

This growing collection of time lapse videos of nights in urban centres provides insights how city lights change throughout the course of the night

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Loss of the Night


The illumination of the night caused by artificial light

The photo above shows a bright night sky, illuminated by an abundance of lights. Because light has positive connotations with security, wealth and modernity, humans tend to illuminate their environment intensively. Although artificial light provides countless advantages to humans, it also has its dark side. Over the last decades, light pollution, the pollution of naturally dark skies by artificial light, has intensified, without regard to its potential impacts on humans and the environment. While some scientific investigation of light pollution and its effects has taken place, it has been narrowly focused within astronomy or the effects on single organisms. To date, there has not been a wide ranging interdisciplinary investigation.

In the interdisciplinary research project "Loss of the Night", funded by the Federal Ministry of Education and Research (BMBF), scientists will investigate the reasons for the increasing illumination of the night, its ecological, cultural and socioeconomic effects, and the effects on human health. The results of this research will help us to develop improved lighting concepts and sustainable technologies.

Our Homepage provides detailed information about the project, the participating institutes and the state of current scientific research.
Are you looking for information about "Loss of the Night" at a glance? Here you will find our flyer.

The project ist funded by the
Loss of the night is a partner of the Science Year 2012 for sustainable development of the Federal Ministry of Education and Research - Project EARTH Our Future.

The research group  is also part of the research platform MILIEU of Freie Universität Berlin

Loss of the night initiated the EU network LoNNe (Loss of the Night Network) to join venture for the scientifical analysis of light pollution. In the EU-COST Action ES1204 participate today parties from 18 countries.

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