From Twitter https://twitter.com/: Space may seem empty, but its actually a dynamic place, dominated by invisible forces like magnetic fields: https://nasa.tumblr.com/post/162908252239/magnetospheres-how-do-they-work?linkId=39694927 https://twitter.com/NASA/status/885226150234116096/photo/1 https://chirp.cooleysekula.net/attachment/37133