Aboard the International Space Station, astronaut Terry Virts posted this image and wrote, "One of the most amazing sites on Earth #AmazonRiver delta." The station crew has been working on a variety of robotics activities this week. On Wednesday, they tested a humanoid robot and explored how bowling ball-sized satellites, known as SPHERES, can navigate around objects. Crew members trained earlier in the week for the planned Sunday capture of the Dragon spacecraft using the 57.7 foot Canadarm2. Image Credit: NASA #iss #isscargo #space #nasa #exp41 #earth #astronauts #spacestation