Rare Encircling Filament via NASA https://t.co/5snnQXNUh1 http://pic.twitter.com/w1CmUCxXwR
— martinengwicht (@martinengwicht) November 8, 2017
from Twitter https://twitter.com/martinengwicht
learning by doing
Rare Encircling Filament via NASA https://t.co/5snnQXNUh1 http://pic.twitter.com/w1CmUCxXwR
— martinengwicht (@martinengwicht) November 8, 2017
from Twitter https://twitter.com/martinengwicht