Mysterious Green Lasers from NASA Observed by Japanese Astronomer

Japanese astronomer Daichi Fujii captured footage of three green laser pulses streaking across the sky, which he later identified as coming from NASA's ICESat-2 satellite. The satellite is used to measure the height of Earth's surfaces and fires lasers 10,000 times per second. This is the first time the team has seen footage of the instrument's lasers pulsing through the sky. The lasers require unique atmospheric conditions to be spotted, and the clouds over Hiratsuka City Museum that night scattered the laser light enough to make it visible to Fujii's cameras.