NASA Earth on Instagram: "For over 50 years, @nasa/@usgs Landsat satellites have monitored Earth’s coastlines. While coastal ecosystems cover only a small portion of our planet, they play an important role: storing carbon, buffering storms, and sheltering wildlife. This data helps us understand how coastal ecosystems are changing. For example, Landsat data has shown how hurricanes impact mangroves, expanding meadows of eelgrass, changes in water quality, and more. #Earth #NASA #Coast #Beach #Sci

History Photographed on Instagram: "This is the phenomenon of astronauts temporarily having difficulty readjusting to Earth's gravity after spending time in space.⁠ ⁠ This condition, which is called orthostatic intolerance, is a condition where the bodies struggle to adjust to Earth’s gravity in an upright position. ⁠ ⁠ In space, their bodies adapt to microgravity, which weakens leg muscles and causes cardiovascular changes. ⁠ ⁠ Back on Earth, standing up can lead to a sudden drop in blood press