Astronaut-Educator Ricky Arnold Conducts Science on Station via NASA https://t.co/dAp50nfYWL pic.twitter.com/eAK9xIxgtt
— martinengwicht (@martinengwicht) May 8, 2018
from Twitter https://twitter.com/martinengwicht
learning by doing
Astronaut-Educator Ricky Arnold Conducts Science on Station via NASA https://t.co/dAp50nfYWL pic.twitter.com/eAK9xIxgtt
— martinengwicht (@martinengwicht) May 8, 2018
from Twitter https://twitter.com/martinengwicht