https://media.ccc.de/v/33c3-7927-lasers_in_the_sky_with_asteroids

At 32C3 we shot lasers into space... now it's lasers in space!
We look at space- and airborne laser platforms and what practical uses people have come up with (hint: mostly more or less secret communication and military use). We'll also recap the basic physics and boundaries and check if 'pew pew pew' is really gonna cut it (hint: mostly no). To close, we'll have a look at laser based propulsion for space travel and other speculative applications off the beaten path.

Peter Buschkamp