Astro du jour by Alexandre MODESTO News Not one to brag, but this is pretty momentous. By dropping this one tube to the ground, I’ve officially started setting aside samples that Mars Sample Return could bring back to Earth someday. Learn more: https://t.co/abNfyxE8Cy pic.twitter.com/SkjzFIn6Kd— NASA's Perseverance Mars Rover (@NASAPersevere) December 21, 2022