Apollo 15 was the ninth manned mission in the United States’ Apollo program, the fourth to land on the Moon, and the eighth successful manned mission. It was the first of what were termed “J missions,” long stays on the Moon, with a greater focus on science than had been possible on previous missions. It was also the first mission on which the Lunar Roving Vehicle was used.
The mission began on July 26, 1971, and ended on August 7. At the time, NASA called it the most successful manned flight ever achieved.
Planet Mercury in amazing color showing rock compositions
NASA has been capturing images of the solar systems smallest planet Mercury for 2 years with its Messenger spacecraft, and has been collecting high resolution color images of the planet. Now the visual data has been stitched together to make a 3D model of the Mercury.
"The areas that you see that are orange - those are volcanic plains. There are some areas that are deep blue that are richer in an opaque mineral which is somewhat mysterious - we don’t really know what that is yet. "And then you see beautiful light-blue streaks across Mercury’s surface. Those are crater rays formed in impacts when fresh, ground-up rock is strewn across the surface of the planet."