Across
- 2. a dense centrally located concentration of stars found at the heart of most spiral and so galaxies
- 4. a dense spherical collection of hundreds of thousands to millions of ancient stars
- 7. the region of the sky along the milky ways galactic equator that is largely obscured at visible wavelengths
- 8. cluster loosely bound groups of tens to thousands of young stars
- 10. young metal rich stars located in the disc and spiral of galaxies
- 12. explains the long lived persistent spiral structure of galaxies
- 13. way a spiral galaxy that contains our solar system
- 14. flattened rotating structure composed of gas dust and stars
- 15. a dense interstellar dust cloud containing concentrations of cosmic dust gas and plasma
Down
- 1. ancient metal poor stars formed early in the universes history
- 3. a cloud of ionized interstellar gas
- 5. nebula interstellar dust cloud that shines and reflects light
- 6. uses natural master radiantion to probe the physical processes in the atmospheres and circumstellar shells of late type stars
- 9. a large spherical and faint component surrounding a spiral galaxy
- 11. hypothetical first generation of stars formed in the early inverse composed entirely of primordial gas