Space

3. A person who travels in space, exploring and conducting experiments in spacecraft.
7. A vehicle or machine designed to travel or operate in outer space, carrying astronauts or scientific instruments.
9. A powerful explosion that occurs at the end of a star's life cycle, releasing a tremendous amount of energy and matter into space.
10. A small celestial object consisting of a nucleus of ice and dust that orbits the Sun, often developing a bright tail when near it.
11. A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.
13. An optical instrument designed to make distant objects appear nearer and larger, used for observing celestial objects.
15. A large cloud of gas and dust in space, visible either as a bright patch or as a dark silhouette against other luminous matter.

1. Relating to the Moon or characteristic of it, such as lunar eclipses or lunar landings.
2. A large celestial body that orbits around a star, like Earth or Mars, and may have its own moons.
4. An object that orbits a planet or other celestial body, usually used for communication, navigation, or scientific observation.
5. Hole A region of spacetime where gravity is so strong that nothing, not even light, can escape from it.
6. A small rocky body orbiting the Sun, especially between the orbits of Mars and Jupiter, which can vary in size from a few meters to hundreds of kilometers across.
8. System A collection of planets, moons, comets, asteroids, and other celestial bodies that orbit around a star, typically referring to our Sun and its system of planets.
12. A small rocky or metallic body that enters Earth's atmosphere, appearing as a streak of light before burning up due to friction.
14. A luminous sphere of plasma held together by gravity, like the Sun, which emits light and heat.