It was OK to touch the surface. Those are just day-to-day reminder signs. We were going to clean it anyway. It was an honor to host you! https://t.co/gu8zxknsJv— NASA (@NASA) July 7, 2017
It was OK to touch the surface. Those are just day-to-day reminder signs. We were going to clean it anyway. It was an honor to host you! https://t.co/gu8zxknsJv