> Well, if the ISS is around 420km up, and Mars is on average 225 million km away, and all other parameters of the laser are identical, then the laser would nee

> Well, if the ISS is around 420km up, and Mars is on average 225 million km away, and all other parameters of the laser are identical, then the laser would need to be around 700GW. What if we tried more power? http://what-if.xkcd.com/13/ http://what-if.xkcd.com/13/ (I am a bad person. I am sorry.)