“Betsiboka river in Madagascar, remind me of the arteries in your retina,” Pettit said in a post accompanying the image that he captured from the International Space Station ISS some 250 miles above Earth. Betsiboka river in Madagascar, remind me of the arteries in your retina. pic.twitter.com ZM7KG0nFgx — Don Pettit @astro_Pettit January 23, 2025 The bright red color is due to the high concentration of iron rich sediments carried by the waterway. The estuary is a exce
