If you're looking for a reason to get psyched about the Artemis II launch today, check this out: "For the first time on a lunar crewed mission, NASA will test a high-speed laser communications system with the Orion Artemis II Optical Communications System (O2O). Unlike the traditional radio waves used in the Apollo missions, O2O uses infrared lasers to beam data back to Earth at up to 260 megabits per second, which is fast enough to stream multiple 4K video feeds from the Moon in real time.