Features Of The Universe

4. An individual form of life that is capable of growing and reproducing, and have one or more cells.
9. Millenium- 1000 years Century-100 years decade-10 years
11. The boundless three-dimensional extent to which objects and events have relative position and direction
12. Consists of our star, the Sun, and everything bound to it by gravity
15. A powerful and luminous stellar explosion
16. A very large star of high luminosity and low surface temperature
17. It may exist in potential, kinetic, thermal, helectrical, chemical, nuclear, or other forms
19. How astronomers explain the way the universe began
20. Smaller than a star and doesn't give off light

1. A small piece of anything
2. A hot ball of glowing gases at the heart of our solar system
3. Sprawling systems of dust, gas, dark matter
5. the substance or substances of which any physical object consists or is composed
6. Radio waves, microwaves, infrared, visible, ultraviolet, X-ray and gamma radiation are all different forms of light
7. Highly magnetized rotating compact star
8. Where gravity and density are infinite and space-time extends into infinity
10. A giant cloud of dust and gas in space
13. Lumps of rock or iron that orbit the sun
14. The distance light travels in one year
15. Any massive self-luminous celestial body of gas
18. The change in wave frequency during the relative motion between a wave source and its observer