Space

2. An optical instrument that makes distant objects appear larger and brighter using lenses or curved mirrors
4. torus-shaped region in the Solar System, located roughly between the orbits of the planets
5. you will see this at night in the sky
6. The branch of science which deals with celestial objects, space, and the physical universe as a whole.
8. a TV show related to a theory
9. a coherent, typically large body of matter with no definite shape.
11. electromagnetic radiation with wavelengths longer than those of visible light.
12. an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
14. the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
16. a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
17. a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such.
20. The curved path of one object, such as a planet or moon

1. a number which scales, or multiplies, some quantity.
3. The range of frequencies over which electromagnetic radiation extends
7. it has been expanding since its creation in the Big Bang about 13 billion years ago.
10. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
13. a celestial body moving in an elliptical orbit around a star.
15. a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.
18. An imaginary line about which a body rotates.
19. Year the oppisite of a heavy year