NASA @NASA
A small iceberg peeks out from frigid Antarctica waters. The smooth surface of the sea ice indicates that it is topped w/ ample snow. This image was taken during a flight for Operation IceBridge, the largest airborne survey of Earth's polar ice ever flown: https://t.co/agOKJcUPRV https://t.co/PyAaLUKFAl — PolitiTweet.org