On Thursday 18 August, the sky above the Allgäu Public Observatory in southwestern Bavaria was an amazing sight, with the night lit up by two very different phenomena: one an example of advanced technology, and the other of nature’s dramatic power. As ESO tested the new Wendelstein laser guide star unit by shooting a powerful […]
![Science: Laser & Lightning laser-lightning](http://geekmodish.com/wp-content/uploads/2011/09/laser-lightning.jpg)