Mercury, the smallest planet in our solar system. Also the closest planet to the sun. It is slightly bigger then the moon. The surface of Mercury is similar to the moon, it is covered in craters from asteroid impacts. Its atmosphere is much thinner then Earth, so instead of most being burned up in the atmosphere it crashes into Mercury. It is heated by harsh warm weather during the day and frozen during the night.
#space #nasa #astronomy #mercury #solarsystem #astrophysics #astrophotography by aerospace.posts