The world is remembering 50 years since humans landed on the moon.
American astronauts Buzz Aldrin and Neil Armstrong became the first people to walk on the Moon on 20 July 1969.
As Neil Armstrong walked he spoke the famous words: “That’s one small step for man, one giant leap for mankind.”
A camera was able to transmit the moment to around 650 million people who were watching on television.
Armstrong was joined by fellow astronaut Buzz Aldrin. They spent 21 hours on its surface, including a seven-hour sleep, before returning to Earth.
Why was the Moon landing so important?
The simple reason is that it had never been done before – and it was a big ambition for countries.
In 1962, US President John F Kennedy announced a big ambition, in a speech which is now very famous.
In the run-up to the Moon landing, the US was competing with the Soviet Union. Both were trying to be the first to complete missions exploring the world outside the Earth’s atmosphere.
“We choose to go to the Moon!” he said.
NASA invested lots of money (around $25 billion) and effort into making this happen. The mission would come to be known as the Apollo programme and its goal was to land humans on the Moon and bring them safely back to Earth.
About 400,000 people worked on the project.
The Moon landing in numbers
About 400,000 people worked on the Apollo 11 mission
It cost Nasa around £25 billion
The mission blasted off on 16 July 1969
It took four days, six hours and 45 minutes to get to the Moon
The lunar module landed on the Moon at 8:17pm on 20 July 1969
By the time the crew landed back on Earth, the mission had taken 8 days, 3 hours, 18 minutes and 35 seconds
Elon Musk’s company SpaceX has unveiled the first private passenger it plans to fly around the Moon.
42 year old Japanese billionaire, Yusaku Maezawa, will be the first ‘Moon Tourist’.
The mission is planned for 2023, and would be the first lunar journey by humans since 1972.
But the rocket meant to take him to the moon still has not been built yet, and Mr Musk cautioned: “It’s not 100% certain we can bring this to flight.”
Only 24 humans have visited the Moon – all of them Americans; 12 of them landed on the moon. Nasa’s Apollo 17 in December 1972 marked the last time humans landed on the moon, or went beyond low Earth orbit.