re: #66 Nerdy Fish

At last, we’ll be able to measure the distance to the horizon on the border.

“…The laser light is at 532 nanometers, a bright green on the visible spectrum. It is fast-firing - it sends 10,000 pulses per second, as compared to the laser on the first ICESat, which sent 40 pulses per second. With this incredibly fast pulse rate, ATLAS can take measurements every 2.3 feet along the satellite’s ground path.”
https://icesat-2.gsfc.nasa.gov/space-lasers#:~:text=ATLAS%20carries%20two%20lasers%2C%20one,sent%2040%20pulses%20per%20second.