| A | B |
|---|
| probe | unmaned spacecraft used to collect data and send back to Earth |
| natural satellite | Example: Our moon |
| man made satellite | Sputnik & Communication devices that orbits another object |
| main goal was for a person to orbit Earth & return safety | Project Mercury |
| main goal to connect to another spacecraft in orbit | Project Gemini |
| main goal to reach the moom | Project Apollo |
| Reusable spacecraft | Space Shuttle |
| first person in space | Yuri A. Gagarin |
| first satellite | Sputnik |
| 1957 | year 1st object orbited Earth |
| 1961 | year 1st man in space |
| 1969 | year 1st man on the moon |
| 1st man on the moon | Neil Armstrong |
| Space Station | for living, exercise, and work in space |
| Skylab | US 1st space station-crews spent up to 84 days there |
| Mir | Soviet Unions 1st space station |
| Dr. Valery Polyakov | Spent over a year in space (Russian) |
| International Space Station | Cooperative effort to built a space station for 16 countries |
| solid rocket booster | reusable; parachute back to Earth after Shuttle's lift off and is reused |
| rocket | engines that have everything they need for burning fuel...not air required |
| liquid-propellant rockets | can be shut down after ignited |
| solid-propellent rocket | cannot be shut down after it is ignited |
