
NASA @NASA
#OTD in 1976, our Viking 2 lander successfully touched down on Mars. Today, @NASAAstrobio researchers are still using data from our Viking missions to develop strategies for answering the question: could ancient Mars have supported life? https://t.co/nWj6rxXvXy https://t.co/YYSALFDAas — PolitiTweet.org