Over the Hawaiian Islands there was another strange phenomenon in the atmosphere. On January 28, eyewitnesses noticed a green laser piercing the night sky, silently paving the way to the horizon. In slow motion, this “laser show” resembled the stuttering of the code in the “Matrix”. Fortunately, these were not the tricks of an alien spacecraft scanning the Earth for signs of life. It turned out that mysterious green rays were coming out of an orbiting satellite.
At first, experts believed that it could be one of NASA’s research satellites. Experts from the National Astronomical Observatory of Japan (NAOJ) reported on Twitter that the green light probably came from a radar device on an orbiting satellite known as ICESat-2. This device belongs to NASA and is used to monitor the thickness of sea ice, ice sheets and forests on Earth. But on February 6, 2022, the NAOJ said that, judging by the trajectory of the laser, it was unlikely that it was a NASA satellite.
NASA scientists conducted a simulation of the trajectories of orbiting satellites with similar laser instruments on board, and found the most likely candidate in the ACDL instrument of the Chinese satellite Daqi-1/AEMS.
Daqi-1 was launched in April 2022 and it is similar to ICESat-2. This satellite was created to monitor the atmospheric environment. The name of its ACDL device translates as “LIDAR for detecting aerosols and carbon dioxide”. It is in orbit around the Earth to monitor global carbon levels as well as atmospheric pollution. It was believed that it was its laser that lit up the sky over Hawaii at the end of January.
Thanks to ACDL, it can send lasers at specific wavelengths to detect different molecules in the Earth’s atmosphere. The time it takes for these laser beams to reflect off the surface provides information about the composition of the atmosphere. For example, ACDL can determine how much CO2 it contains by emitting two replaceable lasers in the wavelength range of 1572 nm.
In the future, China will produce a series of Daqi satellites that will be used to monitor atmospheric pollution, as well as to support scientific research on global climate change. Daqi-1 will be networked with other satellites to implement greenhouse gas monitoring and help China reduce carbon emissions.
It is unknown whether these green lasers for detecting the atmosphere will become more common when China reaches its goal.
Earlier we wrote about how the US government reported hundreds of sightings of the UFOs phenomenon.
According to Science Alert.
Follow us on Twitter to get the most interesting space news in time