Across
- 2. An object whose gravity is so strong that nothing, not even light can escape.
- 7. All of space and everything in it.
- 8. Rocky objects revoloving around the sun that are too small and numerous to be considered a planet.
- 12. The spinning motion of a planet on its axis.
- 13. A large cloud of gas and dust, spread out in an immense volume.
- 18. One of the small asteroid-like bodies that formed the building blocks of the planets.
- 19. An artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
- 20. dark area of gas on the sun's surface tht is cooler that surrounding gases.
- 22. A huge group of a single stars, star systems, star clusters, dusts, and gas bound together by gravity.
- 24. THE fuzzy outer layer of a comet
Down
- 1. THE apparent change in position of an object when seen from different places
- 3. The blue-white hot core of a star that is left behind after its outer layers have expanded and drifted out into space.
- 4. The brilliant explosion of a dying supergiant star.
- 5. THE study of moons, stars, and other objects in space.
- 6. A small, old, relatively cool star.
- 9. A huge, reddish loop of gas that protrudes from the sun's surface, linking parts of sunspot regions.
- 10. The movement of an object around another object.
- 11. THE small, dense remains of a high-mass star after a supernova
- 14. THE solid inner core of a comet
- 15. An imaginary pattern of stars in the sky.
- 16. A contracting cloud of gas and dust with enough mass to form a star.
- 17. The tendency of an object to resist any change in its motion.
- 21. A stream of electronically charged particles that emanate from the sun's corona.
- 22. The force that pulls objects towards each other.
- 23. A loose collection of ice, dust, and small rocky particles, typically with a long, narrow orbit.