Not Aliens. Or Ray Guns

Green lines seen in the sky over Japan that looked like somebody was shooting Godzilla have been confirmed to be...

...NASA's fault.

Specifically, ICESat-2 shoots 10,000 laser pulses a second to measure ice, cloud and land elevation. These lasers aren't visible. Unless...there are very specific cloud conditions.

So if you see green lasers in the sky, it's probably just a NASA mapping satellite.

Probably.