Any of these organs can generate pain, and it is sometimes difficult to pinpoint the exact source of abdominal or pelvic pain. In girls and women, it can stem from the urinary, gastrointestinal or reproductive system.
The first human-made object to reach the surface of the Moon was the Soviet Union 's Luna 2 mission, on 13 September 1959. The United States' Apollo 11 was the first manned mission to land on the Moon, on 20 July 1969.
Apollo 15 â 2 people. David Scott and James Irwin landed on the Moon on July 31, 1971 for the Apollo 15 mission, staying for three days, until August 2nd. Unlike the previous missions which landed on the flat lunar plains, the Apollo 15 landed between two mountains in an area called Hadley Rille.