• NASA 2020: Are you ready? https://youtube.com/watch?amp%3Bv=mB1nAzriqRQ&feature=emb_title 5 comments 1/1/2020 space
• NASA 2020: Are You Ready? https://youtu.be/mB1nAzriqRQ 12 comments 31/12/2019 space
• NASA's Rocket to Deep Space May Not Be Ready Until 2020 https://www.nytimes.com/2017/11/09/science/nasa-space-launch-system-delay.html 4 comments 9/11/2017 space