Across
- 2. biggest planet
- 6. big bang happened 13.7 _______ ago.
- 7. a notional boundary around a black hole beyond which no light or other radiation can escape.
- 8. third planet from the sun
- 9. name of our galaxy
- 12. system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
- 13. the hottest color of a star
- 14. coolest color of a star
Down
- 1. the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.
- 2. the best teacher ever!
- 3. closely compacted in substance
- 4. the center point of a black hole
- 5. made from gasses and particles spinning fast
- 10. girls favorite fast food
- 11. most popular drink in 5b