space

4. System A system consisting of a star (the Sun) and the celestial objects that orbit around it, including planets, moons, asteroids, and comets.
7. An instrument used to observe distant objects in space. Telescopes gather and focus light, allowing us to see celestial bodies more clearly.
9. Hole A region in space with extremely strong gravity that nothing, not even light, can escape from. Black holes form when massive stars collapse.
10. A scientist who studies celestial objects such as stars, planets, galaxies, and other phenomena in the universe.
12. A term used in some countries for an astronaut or a person who travels and works in space. It is commonly used in Russian-speaking countries.

1. A person who travels and works in space. Astronauts undergo extensive training to be able to live and work in microgravity conditions.
2. An object that orbits around a planet or a star. Satellites are used for communication, weather observation, navigation, and scientific research.
3. A celestial object made up of ice, dust, and gas that orbits the Sun. When a comet gets close to the Sun, it develops a glowing coma and a tail.
5. A cloud of gas and dust in space. Nebulas are often the birthplaces of stars and can have beautiful, colorful shapes and patterns.
6. A large celestial body that orbits around a star. Planets are round and do not produce their own light but reflect the light of the star they orbit.
8. A small rock or particle in space. When a meteoroid enters Earth's atmosphere and burns up, it is called a meteor.
11. A massive collection of stars, dust, and gas held together by gravity. Galaxies can be spiral, elliptical, or irregular in shape.