June 19, 2020
NASA is inviting the public to help get ready for the upcoming launch of the Mars 2020 Perseverance Rover by joining a global, collective #CountdownToMars. Fans are asked to record video of their creative countdowns to liftoff, then share and tag them on social media with #CountdownToMars. Favorites may be featured on NASA social media and included in a compilation video on launch day.