| A | B |
|---|
| International Space Station | space exploration and research platform orbiting more than 350km above the earth |
| Zarya | launched in 1998, Russian built, American owned, original piece housing guidance and propulsion components |
| Unity | American, designed as a large connecting dock |
| Zvezda | Russian service module, provides support systems and living quarters for 2 people |
| Trusses | connecting structures |
| Destiny | US, laboratory |
| Canadarm2 | Canadian, huge robotic arm that helps build and maintain the ISS |
| Kibo | Japanese experiment module |
| Columbus | European research module |
| Microgravity | less than 1 millionth of the gravity felt on Earth (low gravity conditions) |
| Apollo Project | series of space flights dedicated to getting American astronauts on the moon |
| Space Race | Informal competition between USA and Soviet Union to see who could do more with space technology |
| Apollo I | three Apollo pilots for this mission die in a capsule fire |
| Apollo 17 | this Apollo mission is the last one sent to the moon |
| Apollo 7 | this Apollo mission launches three men into space for the first time |
| Apollo 13 | this Apollo mission has an explosion on its way to the moon |
| Apollo 11 | this Apollo mission sends the first human to walk on the moon |
