This combination of images from video made available by NASA shows steps in the descent of the Mars Perseverance rover as it approaches the surface of the planet on Thursday, Feb. 18, 2021. (NASA/JPL-Caltech via AP)

This composite image made available by NASA, produced from photos captured Feb. 20, 2021 by the Perseverance Mars rover, shows the surface of Mars. It landed on Thursday, Feb. 18. (NASA/JPL-Caltech via AP)