Is s space laser possible yes. Is it possible to hide a space laser from even a hobbyist stargazer, no. The IR radiation from the nuclear powerplant required for it will light up the sky
fiber lasers make it possible. watch the video.
I think this guy is just outright bad at math. No way the size of the lasers battery is anything less than 300kgs. He also jumps from saying the laser point is 1.5 meters in diameter to saying it's .5 meters in diameter in the next sentence
my onions have their own chairs https://i.poastcdn.org/42bfc390236acc6b66514f7ee315370286adaaff7f4883d573507190f3378cf8.jpg