NASA @NASA
‘Are we alone?’ 🤔 In an attempt to answer this age-old question, our #Mars2020 rover will soon embark on a journey to the Red Planet. Learn how a new device from @NASA_Johnson will help its search for chemicals linked to the existence of life: https://t.co/3ErY4iWgLE https://t.co/HDm8u1NQIr — PolitiTweet.org