This colorful view of Mercury was produced by using images from Messenger's color base map imaging campaign which enhance the chemical, mineralogical, and physical differences between the rocks that make up the planet's gray pock-marked moon-like surface
Venus - one day is longer than its entire year. It takes Venus 243 Earth days to completely rotate on its axis, but just 225 days to orbit the sun. Venus is one of two planets that rotates in reverse, called retrograde motion.
Neptune is the and last planet of the solar system, as Pluto was categorized as a dwarf-planet a few years ago. Dark, cold and whipped by supersonic winds, Neptune is the furthest away from the Sun of the hydrogen and helium gas giants in our Solar Sy
Scientists have discovered the first binary system ever known to consists of a black hole and a ' spinning' star.
This global view of Jupiter's moon, Io, was obtained during the tenth orbit of Jupiter by NASA's Galileo spacecraft. Io, which is slightly larger than Earth's Moon, is the most volcanically active body in the solar system.