Across
- 3. - a long distance or great amount is know as a _____ year.
- 6. - it is the biggest planet in our solar system
- 7. - it is also known as a zodiacal cloud
- 9. - a highly magnetized rotating compact star that emits beams of electromagnetic radiation out of its magnetic poles.
- 11. - it is the biggest star known to mankind
- 13. - a region of spacetime where gravity is so strong that nothing
- 15. - it's a force that attracts a body toward the centre of the earth.
- 17. - theirs only one (hint: it's in the title)
- 19. - the indefinite continued progress of existence and events in the past, present, and future regarded as a whole.
- 21. - a powerful and luminous stellar explosion
Down
- 1. -a luminous giant star of low or intermediate mass in a late phase of stellar evolution.
- 2. - the planet is also known as the red planet
- 4. - a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity
- 5. - the collection of eight planets is called?
- 8. - a system of millions or billions of stars, together with gas and dust.
- 10. - the planet is full of gas
- 12. - the greek god of water (also known as Poseidon)
- 14. - the natural agent that stimulates sight and makes things visible.
- 16. - its a planet with a ring around it
- 18. - it a planet full of oxygen life and water
- 20. - it only comes out at night