Landsat 9 is the latest satellite in the Landsat series. It will continue Landsat's irreplaceable record of Earth's land surface upon its September 2021 launch. Landsat 9 will carry two science instruments. Both instruments have sensors with moderate spatial resolution--15 m (49 ft), 30 m (98 ft), and 100 m (328 ft) depending on spectral band--and the ability to detect the same range in intensity as Landsat 8, or better. Landsat 9 will be placed in an orbit that it is eight days out of phase with Landsat 8 to increase temporal coverage of observations. The one STL file contains three parts, as shown in the first photo: (1) the solar array, (2) the spacecraft left half and (3) right half. You glue the halves together and then insert the solar array. The solar array can be articulated, and the science instruments are well represented.
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