Now, on February 18, NASA is set for another delicate dance of interplanetary chronology when its Perseverance rover touches down on Mars—the successor to its aesthetically identical sibling, Curiosity, which landed in 2012. The rover has an ambitious amount of science to conduct in its primary mission lasting one Martian year (two Earth years). Interplanetary mission timings are always subject to change depending on how things progress, of course, but a timeline is already in place for Perseverance’s first 100 days on Mars. Over the next few days, Perseverance will go through a number of important tasks to ensure it is up and running smoothly. After its first 100 days on Mars, possibly sometime in June, the rover will be ready to conduct one of the most exciting searches for life on Mars to date.