space

2. Hole A region in space with extremely strong gravity that nothing, not even light, can escape from. Black holes form when massive stars collapse.
5. An instrument used to observe distant objects in space. Telescopes gather and focus light, allowing us to see celestial bodies more clearly.
7. A vehicle that is propelled by engines and carries spacecraft into space. Rockets provide the necessary thrust to overcome Earth's gravity.
9. A small rock or particle in space. When a meteoroid enters Earth's atmosphere and burns up, it is called a meteor.
10. 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.
12. A massive collection of stars, dust, and gas held together by gravity. Galaxies can be spiral, elliptical, or irregular in shape.

1. 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.
3. A scientist who studies celestial objects such as stars, planets, galaxies, and other phenomena in the universe.
4. System A system consisting of a star (the Sun) and the celestial objects that orbit around it, including planets, moons, asteroids, and comets.
6. An object that orbits around a planet or a star. Satellites are used for communication, weather observation, navigation, and scientific research.
8. The curved path followed by an object, such as a planet or a satellite, as it revolves around another object, usually a star.
11. A person who travels and works in space. Astronauts undergo extensive training to be able to live and work in microgravity conditions.