The Universe

1. A part of a constellation that forms its own pattern in the sky
4. Shaped like spheres or eggs, have almost no dust or gas between stars
6. Solid debris from space that are moving towards earth
9. The primeval explosion of space, time, matter and energy that most astronomers think gave rise to the universe as we see it today
12. The units most commonly used for distances in the solar system
13. A small body of ice and dust that orbits the sun (Contains a head followed by a tail of gas and dust)
16. A brief streak of light produced by a small particle entering earths atmosphere at high speed
18. The sun and all things orbiting around it, including the eight major planets, their satellites and all the smaller pieces such as asteroids and comets
20. A major object which orbits around a star (There are 8 of these in our solar system)

2. Have arms of stars gas and dust that curve away from centre of the galaxy in spiral pattern
3. Small solid and rocky bodies that orbit close to the sun
4. He determined that other galaxies exist besides that milky way
5. The branch of astronomy that deals with the origin, large-scale properties, and the evolution of the observable universe
7. A group of starts that form a pattern in the sky
8. A large hot ball of gas which generate energy in its core by nuclear reactions
10. A large assemblage of stars (and often gas and dust) typically containing millions to hundreds of billions of member stars
11. Everything that physically exists: the entirety of space and time, all forms or matter, energy and momentum, and the physical laws and constants that govern them
14. The number of major types of galaxies
15. A small object from outer space that passes through earths atmosphere and reaches the surface
17. Faint galaxies without a definite shape
19. The distance that light travels in one year