Sciences words

5. It is an astronomical body that orbits planet Earth
7. A celestial object that orbits the sun along an elongated path and when near the sun has a "tail" of gas.
8. It is an optical instrument that aids in the observation of remote objects in the sky
9. Our Galaxy
10. All of space and everything in it including stars, planets, galaxies.
14. This is made up of the Sun and 8 other planets
15. they are large natural objects that orbit, or travel around stars
17. The planet on which we live, the world

1. The coldest month
2. A group of stars forming a recognizable pattern.
3. The hottest month
4. a planet
6. a famous comet
11. It is the star at the center of the solar system that emits light
12. The system of millions or billions of stars , held together by gravitational attraction
13. These are made up of rock or even metal
16. It is the division of the year marked by changes in weather