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.
Neil Armstrong and Buzz Aldrin plant the US flag on the Lunar Surface during the first human moonwalk in history on July 20, 1969. Credit: NASA. On July 19th at 17:21:50 UTC, Apollo 11 passed behind the Moon and fired its service propulsion engine to enter lunar orbit.