Human Space Flight
NASA's Apollo program resulted in the first humans walking on the Moon. The first four flights tested the equipment. Six of the other 7 flights successfully landed on the Moon. The first crew (Apollo 11) landed on the Moon on 1969. The last flight (Apollo 17) left the Moon in 1972. The Apollo missions followed NASA's Mercury and Gemini missions.
The International Space Station (ISS) is a spacecraft large enough for several astronauts to live on at once. It orbits the Earth 400 km above our planet's surface, travelling at 27,600 km/hour. This means it completes 1 orbit of the Earth in 90 minutes! You can sometimes see the ISS at night - you don't need a telescope. It looks like a small, bright dot moving quickly across the sky.