Across
- 5. Artificial body placed in space to collect information
- 6. the springing forth of the tide during new and full moon.
- 9. Year traveling a speed of light(distance)
- 11. Regular, repeating path object in space takes.
- 13. large body of matter with no definite shape
- 15. star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most matter
- 18. a spectrum of the electromagnetic radiation emitted by a source
- 21. Region of space where no radiation or matter can leave
- 22. rotating circumstellar disk of dense gas surrounding a young newly formed star
- 23. Relative mass by gravitational force
- 24. how astronomers explain the way the universe began
- 25. A system with stars, gas, dust; held by gravity.
Down
- 1. The wavelength of the detected radiation depends on the motion of the object when the photon was emitted
- 2. all existing space and matter.
- 3. optical instrument designed to make distant objects appear closer
- 4. Nuclei fuse to form heavier nucleus.
- 7. Deformations caused by another gravitational field
- 8. Two-dimensional graph designed for absolute magnitude of stars.
- 10. tide of minimal range occurring near the time when the Moon and the Sun are in quadrature
- 12. Unmanned exploratory spacecraft
- 14. Force that attracts us to earth
- 16. a small very dense star that is typically the size of a planet
- 17. Apparatus used for recording and producing Spectra
- 19. Galaxy with our solar system
- 20. Fixed luminous point in sky like our sun