Visit https://www.youtube.com/watch?v=CVwD4FFaZg0 to watch the full Space Greed episode! Or, use https://curiositystream.com/Sabine for a full year of Curiosity Stream for only $14.99.

Is light pollution a real problem or just something that first world people complain about when they have nothing else to complain about? How much of a problem are Elon Musk's StarLink satellites really? In this video we'll look at the data.

The full video about the guys in Rennes turning off shop lights is here:
https://www.youtube.com/watch?v=VVxgGWbiDY8

Light pollution data and images at around 2 minutes from this website: http://www.lightpollution.it/dmsp/index.html

The paper I mention at 4 mins 2 seconds is here: https://academic.oup.com/sleep..../article/39/6/1311/2

The Cerro Tololo image is here: https://noirlab.edu/public/images/iotw1946a/

The paper I mention at 9 minutes 17 seconds about the Zwicky Transient Facility is here:
https://iopscience.iop.org/art....icle/10.3847/2041-82

The BBC interview I mention at 10 minutes is here: https://www.bbc.com/news/scien....ce-environment-60262

The ESO paper I show at 10 minutes 20 seconds is this: https://www.aanda.org/articles..../aa/abs/2020/04/aa37

The IAU press release I mention at 10 minutes 50 seconds is here:
https://www.iau.org/news/press....releases/detail/iau2

You can support us on Patreon: https://www.patreon.com/Sabine

Many thanks to Jordi Busqué for helping with this video http://jordibusque.com/

0:00 Intro
0:51 What is light pollution?
2:36 What are the consequences?
6:56 What can we do?
8:27 How bad is StarLink?
11:24 Sponsor message

#science #astronomy #health