Universe

2. A person who travels and works in space, typically aboard a spacecraft.
4. A vehicle designed for travel and operation in outer space.
6. A natural satellite that orbits around a planet and reflects light from the Sun.
7. A large celestial body that orbits around a star and does not produce its own light.
9. An optical instrument used for observing distant objects in the sky, such as stars, planets, and galaxies.

1. A celestial object consisting of ice, dust, and gas that orbits around the Sun, often developing a visible tail.
3. All existing matter, energy, space, and time, including all the planets, stars, galaxies, and everything in between.
4. The star at the center of our solar system, which provides light and heat to Earth.
5. A luminous sphere of hot plasma, held together by its own gravity, which emits light and heat energy.
8. A system of millions or billions of stars, along with gas and dust, held together by gravitational forces.