Above the islands of Hawaii on January 28, a green laser was seen piercing the night sky, silently tracing a path towards the horizon like a stutter in the Matrix's code.
, and it's used to keep an eye on the thickness of Earth's sea ice, ice sheets, and forests.
"According to Dr. Martino, Anthony J., a NASA scientist working on ICESat-2 ATLAS, it is not by their instrument but by others," a note on the YouTube video explains. "We really appreciate their efforts in the identification of the light. We are sorry about our confusion related to this event and its potential impact on the ICESat-2 team."and similar to ICESat-2, it's an atmospheric environment monitoring satellite.
Lidar is an acronym for laser imaging, detection, and ranging, and it works a little like sonar. But instead of sending out sound waves to map an area, it sends out laser beams.In the case of ACDL, it can send outat specific wavelengths in order to detect various molecules in Earth's atmosphere.
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