Across
- 3. Any of the large systems of stars, etc. in outer space
- 5. To suggest a plan, an idea, etc. for people to think about and decide on
- 7. Containing a lot of people, things, plants, etc. with little space between them
- 10. Far away in space or time
- 12. The process of making something that is new
- 13. An object that remains from an earlier time
- 14. Heat, energy, etc. that is sent out in the form of rays.
- 17. The facts, signs or objects that make you believe that something is true.
Down
- 1. A scientist who studies the sun, moon, stars, planets, etc.
- 2. To become greater in size
- 4. To start to be real
- 6. A point at which a physical quantity takes an infinite value
- 8. The whole of space and everything in it, including the earth, the planets & the stars
- 9. Helping to show that something is true
- 11. The particular way in which something is understood or explained.
- 15. Any physical thing that takes up space
- 16. A formal set of ideas that is intended to explain why something happens or exists