Across
- 2. Relating to the former Union of Soviet Socialist Republics (USSR).
- 5. An object placed in space that travels around a planet and sends information.
- 7. The surname of the first person to walk on the Moon.
- 9. A powerful vehicle used to launch objects into space.
Down
- 1. Large systems of stars, gas, and dust found throughout the universe.
- 2. A vehicle designed to travel through outer space.
- 3. The path followed by a planet, moon, or satellite around another object in space.
- 4. The first woman to travel into space and orbit the Earth.
- 6. The first artificial satellite launched by the Soviet Union in 1957.
- 8. The natural satellite of Earth that astronauts first visited in 1969.