(Yes, I did use CNN as the source but it checks out)

NASA on Saturday will launch its most advanced laser device into space to measure changes in the heights of Earth's polar ice, as well as other topographical features.

https://amp.cnn.com/cnn/2018/09/14/us/nasa-laser-measures-polar-ice/index.html?__twitter_impression=true

https://twitter.com/CNN/status/1040719216243032065?s=19