Bang and Whoosh! via NASA https://t.co/LsTVaGjOPx pic.twitter.com/LAG2S1B8Sy
— martinengwicht (@martinengwicht) June 15, 2018
from Twitter https://twitter.com/martinengwicht
learning by doing
Bang and Whoosh! via NASA https://t.co/LsTVaGjOPx pic.twitter.com/LAG2S1B8Sy
— martinengwicht (@martinengwicht) June 15, 2018
from Twitter https://twitter.com/martinengwicht