ICESat-2
ICESat-2 ( Ice , Cloud , and land Elevation Satellite 2 ) , part of NASA's Earth Observing System , is a satellite mission for measuring ice sheet elevation and sea ice thickness , as well as land topography , vegetation characteristics , and clouds . 
<triplet> ICESat-2 <subj> NASA <obj> operator <subj> Earth Observing System <obj> part of