The Apollo 11 mission was the first spaceflight that landed humans on the Moon. The key events of the mission are as follows:

1. Launch: On July 16, 1969, the Saturn V rocket carrying the Apollo 11 spacecraft launched from the Kennedy Space Center in Florida.

2. Earth Orbit and Translunar Injection: The spacecraft orbited the Earth one and a half times before the third stage rocket fired, propelling the craft towards the Moon.

3. Lunar Orbit Insertion: On July 19, the spacecraft entered into lunar orbit.

4. Lunar Module Separation and Descent: On July 20, the lunar module, named "Eagle," separated from the command and service module. Neil Armstrong and Buzz Aldrin descended to the lunar surface, while Michael Collins remained in lunar orbit.

5. Lunar Landing: The "Eagle" landed on the Moon's surface in the Sea of Tranquility.

6. Moonwalk: Armstrong and Aldrin donned their spacesuits and exited the lunar module. Armstrong famously declared, "That's one small step for [a] man, one giant leap for mankind." They collected lunar samples and conducted experiments.

7. Lunar Module Ascent and Docking: After about 21.5 hours on the lunar surface, Armstrong and Aldrin launched from the Moon to rendezvous and dock with the command and service module in lunar orbit.

8. Trans-Earth Injection: The spacecraft left lunar orbit and began its journey back to Earth.

9. Splashdown: On July 24, the command module, named "Columbia," splashed down in the Pacific Ocean, where the crew was recovered by the USS Hornet.

The Apollo 11 mission successfully achieved its goal of landing humans on the Moon and returning them safely to Earth, marking a pivotal moment in human history and space exploration.