Martian Easter Eggs

Article on t

he "Easter Egg" surprises that have been incorporated into the Mars rovers and landers, such as "...The SuperCam instrument aboard Perseverance also has a calibration target, and it contains a gift for Mars. Dozens of meteorites have been found on Earth that came from Mars, which we know thanks to trapped air bubbles inside of them; these bubbles match the composition of the martian atmosphere. One of these meteorites was sent to the International Space Station, then returned to Earth, where a slice of it was added to the SuperCam calibration target. This will be the first time humans have returned a piece of Mars to its original home..." https://tanyaofmars.medium.com/martian-easter-eggs-87a075fd6f2b