Animation : Borrowed light, by Olivia Huynh
The previous nights were the occasion to see the Perseid meteor shower. It was also the Nuits des Etoiles in France, where hundreds of events are organized to allow people to watch stars and...
Tagged: Dark sky
Starry, Starry, Starry Night
You may perhaps remember the not so distant time when I was posting astrophotography pictures on this very website. I have also wrote a few times on how we are lighting up our cities...
France unveils measures to decrease energy use
Here is another post I wrote for Cleantechies, this time on energy conservation : ” Even after the election of François Hollande as President of France, an energy conservation measure of the previous government...
Urban lights increase air pollution
Too many lights in our cities at night is really bad for our economy as we waste electricity and thus money. It is also a bad idea for nocturnal animals, plants and amateur astronomers...
For many, the sky isn’t dark anymore
I already wrote a few articles on dark skies and light pollution. It seems the phenomenon is even worse as one can see with the image on left (courtesy of Stellarium, a great astronomy...
Barcelona’s amazing smart lightning idea
The city of Barcelona and Spanish utility Endesa have been installing smart LED lightning systems that automatically switch themselves off when no one is around. This enables the city to cut by 30 percent...
Pictures of Earth Hour: how we waste energy
Earth Hour was a tremendous success as many people participated. Cities turned down the lights of their monuments and the pictures of the event are amazing and totally illustrate how much energy and money...
Assessing and ending light pollution
Light pollution is a major problem for astronomers in most if not all countries (see map) . But for the International Year of Astronomy this may change with the following initiative. Globe at Night...
Let there be more light ?
This week-end was held in Slovenia the seventh European Symposium for the protection of the night sky. This is the occasion to have a look at the lightning of our cities at night. As...