Marcus Gee Published February 20, 2021 Updated February 20, 2021 Comments Share Text Size Bookmark Please log in to listen to this story. Also available in French and Mandarin. Log In Create Free Account Getting audio file ... Audio for this article is not available at this time. This translation has been automatically generated and has not been verified for accuracy. Full Disclaimer Open this photo in gallery This photo provided by NASA shows one of the six wheels on the Perseverance Mars rover, which landed on Feb. 18, 2021.