NASA @NASA
What’s it like landing on Mars? Tough! But every time we land, we learn more. When @NASAPersevere landed on Mars, its temperature & pressure sensors collected critical data about entry & landing conditions. Engineer Alex Scammell explains: https://t.co/dCzSvrgHp2 https://t.co/YMOlpavbsX — PolitiTweet.org