Across
- 2. a self-propelled object that carries its own fuel
- 4. a group of stars, gas and dust held together by gravity
- 5. all things that take up space have this
- 6. anything which occupies space and possesses rest mass, especially as distinct from energy
- 7. where our Solar System or main sequence system is found
- 9. an object moving around a star
- 10. a self-luminous object that shines through the release of energy produced by nuclear reactions at its core
- 12. occurs when the force of thrust is greater than the weight of the rocket
- 14. the path one object takes around another
Down
- 1. a cloud of gas and dust
- 3. a grouping of stars which have been given names by ancient astronomers because of the way they look
- 4. the force that attracts a body towards the centre of the earth, or towards any other physical body having mass
- 8. a rock or minor planet orbiting the sun
- 11. an imaginary straight line on which an object rotates
- 13. the substance used to power the object