The use of invisible lasers in space may sound like something from science fiction, but it's real.
원문출처 : https://www.cnn.com/2021/12/07/world/nasa-laser-relay-communications-demonstration-launch-scn/index.html
원문출처 : https://www.cnn.com/2021/12/07/world/nasa-laser-relay-communications-demonstration-launch-scn/index.html