Growing plants on the @space_station isn’t as simple as putting seeds in dirt & waiting for them to grow. @AstroHague explains why Veggie PONDS are used to grow plants in microgravity and how these agriculture experiments will help humans go from the #Moon2Mars. #STEMonStationpic.twitter.com/utypg2H3BZ https://twitter.com/NASAedu/status/1126882906331160581