From Space_Station https://twitter.com/Space_Station on Twitter: The Expedition 54 crew wrapped up cargo operations inside the @SpaceX #Dragon resupply ship and studied what happens to the human heart in space. https://blogs.nasa.gov/spacestation/2018/01/12/dragon-ready-for-return-crew-explores-space-effects-on-heart/ https://twitter.com/Space_Station/status/951919049402826752/photo/1 https://chirp.cooleysekula.net/attachment/47249