Across
- 1. - Space telescope launched into orbit in 1990.
- 3. - First spacecraft to visit Mercury.
- 4. - Series of spacecraft for planetary exploration.
- 7. - Spacecraft that studied the Sun's activity.
- 9. - Mission that sent landers to Mars in search of life.
- 10. - Spacecraft that explored Saturn and its moons.
- 12. - Part of the Voyager program, explored Uranus and Neptune.
- 13. - America's first space station, launched in 1973.
- 14. - Series of spacecraft exploring the solar system.
- 15. - Apollo-Soyuz Test Project, a joint U.S.-Soviet mission in 1975.
- 16. - Vehicle used on the Moon during Apollo missions.
Down
- 2. - Orbiters and landers that studied the Moon.
- 5. - Space program that landed humans on the Moon.
- 6. - First spacecraft to orbit Mars.
- 7. - Spacecraft that studied the solar wind and magnetic fields.
- 8. - Spacecraft that soft-landed on the Moon for exploration.
- 9. - Spacecraft program exploring the outer solar system.
- 11. - Second manned mission to the Skylab space station.
- 13. - Russian spacecraft used for space missions.
- 14. - Spacecraft that explored Jupiter and Saturn.