Across
- 2. how a star's movement affects wavelengths of light
- 4. cold and inert star
- 5. Fermi National Accelerator Laboratory; where scientists study the atom
- 7. matter is the same in the universe regardless of direction the observer looks
- 13. visible light is shifted downward in frequency toward the long-wavelength; red end of the electromagnetic spectrum
- 15. subatomic particles that compose matter and energy
- 16. star that is relatively cool but very luminous because of its great size
- 20. massive amounts of gas in the form of a jet; released by protostar
- 21. unimaginably tiny particles inside a proton
- 23. world's largest particle research laboratory
- 25. stars having B classification
- 27. smallest unit of an element
- 28. negatively charged subatomic particle that normally moves about the nucleus of an atom
- 29. the full range of electromagnetic radiation
- 32. star that suddenly becomes brighter and return to its original brightness over a period of weeks to years
- 33. three stars; the North Star
- 37. amount of light a star puts out
- 38. stars with no nuclear energy remaining energy by fusion after main-sequence stage
- 39. subatomic particle with no electrical charge
- 42. older and colder stars with densely packed matter
- 44. how far the star is from Earth
- 45. small, hot, dense core in the disk's center in the initial stages of a star's evolution
- 46. brightest star in night sky; the Dog Star
- 47. study of the universe
- 48. total amount of energy emitted from a star per second
- 50. atoms of matter
- 51. describes gravity in terms of space-time and relates space-time to the distribution of matter in the universe
Down
- 1. celestial body larger than a planet but does not have sufficient mass for nuclear fusion
- 3. the universe if pretty much the same everywhere
- 6. star's observable characteristics arranged in a catalogue
- 8. light of various wavelengths emitted by a star
- 9. machines that speed up particles to very high energy levels before smashing them into other particles
- 10. object with gravitational field so powerful that no form of matter or energy can escape it
- 11. slight shift of stars among nearby stars
- 12. chart comparing stars' luminosity to temperature
- 14. larger stars that can continue generating energy
- 17. consists of periodically varying electric and magnetic fields that vibrate perpendicular to each other and travel through space at the speed of light spread out by wavelength
- 18. one of the two particle accelerators at Fermilab
- 19. when outer layers of the star are blown off in a violent explosion
- 22. star abnormally faint in luminosity; named for its color
- 24. theory that space and time must be regarded as aspects of a single entity called space-time
- 26. brightest stars having an A classification
- 30. atom smasher that can accelerate particles to 1 trillion electron volts
- 31. order of stars' brightness
- 34. describes the relationship among a star's luminosity, radius, and temperature
- 35. remains of a massive star
- 36. two stars
- 40. elementary particle having a single positive electrical charge and constituting the nucleus of the ordinary hydrogen atom
- 41. theory of the origins of the universe
- 43. smooth diagonal curve on which most stars are found
- 49. enormous, luminous body of gas