Welcome to Best GIS Tutorials. Good news
Fist of all Thanks for USGS and NASA for their efforts
From now Landsat 9 data (images) are available according to USGS.
Now you can download Landsat 9 Collection 2 Level1 and Level2 data from Earth Explorer.
there are two science instruments have been carried by the satellite (LC9) which are the Operational Land Imager 2 (OLI2) and the Thermal Infrared Sensor 2 (TIRS2) for capturing observations of the Earth’s surface in visible, nearinfrared, and shortwaveinfrared bands and measuring thermal infrared radiation, or heat, emitted from the Earth’s surface, respectively. Landsat 9 has higher radiometric resolution for OLI2 (14bit quantization) which allowing sensors to detect more subtle differences
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