Space Odyssey

3. - Hypothetical propulsion system that allows faster-than-light travel
5. - Planet that orbits a star outside the solar system
6. - International Space Station, a habitable artificial satellite in low Earth orbit
9. - Person trained to travel and work in outer space
12. - Activity in which an astronaut leaves the spacecraft and floats in space while attached to it
15. - Force that attracts objects toward each other, keeping planets in orbit around the sun and astronauts on the ground
16. - System of planets and other objects orbiting around a star, such as the sun
17. - Vehicle that uses controlled explosions of fuel to propel itself through space
19. - Relating to or originating from outside the Earth or its atmosphere
20. - Russian term for an astronaut or space traveler

1. - Spacecraft designed for interstellar travel
2. - Structure designed for humans to live and work in outer space for extended periods
4. - Vehicle designed for travel or transportation in outer space
7. - Interstellar cloud of dust, hydrogen, helium, and other ionized gases
8. - Robotic spacecraft designed to explore the surface of Mars
10. - Object placed in orbit around a celestial body for various purposes, such as communication or observation
11. - Spacecraft designed to land on the moon's surface
13. - Space telescope launched by NASA in 1990, providing stunning images of the universe
14. - Region of spacetime where gravity is so strong that nothing, not even light, can escape
18. - Uncrewed spacecraft designed to explore space and gather data about celestial bodies