Planets and space

1. A vast system of billions or trillions of stars, along with gas, dust, and other celestial objects, held together by gravitational forces.
4. A scientist who studies celestial objects, such as stars, planets, galaxies, and their physical properties.
5. The natural satellite that orbits around the Earth and reflects sunlight to create moon phases.
7. A celestial object consisting of ice, dust, and gas that orbits the Sun and often displays a tail when it comes closer to heat.
10. A small object that enters the Earth's atmosphere, producing a streak of light as it burns up due to friction.
12. A vehicle designed for travel or operation in space, including satellites, probes, and manned spaceships.
14. A luminous sphere of gas held together by its own gravity, producing light and heat.

2. A person who travels and works in space, often aboard spacecraft or the International Space Station.
3. An optical instrument used to observe distant objects in space, allowing us to see planets, stars, and galaxies more clearly.
6. A vehicle designed to propel itself into space, typically using engines that burn fuel and expel gases.
8. A large cloud of gas and dust in space, often where new stars are formed.
9. The force that attracts objects towards each other, keeping planets in orbit and giving weight to objects on Earth.
11. An object that orbits around a planet or a star, often used for communication, navigation, or scientific observations.
12. The star at the center of our solar system that provides light and heat to the planets.
13. A rocky object that orbits the Sun, typically found in the asteroid belt between Mars and Jupiter.