Space Vocabulary

2. a group of galaxies that are near each other and have structure in relation to each other.
5. a star that is at the center of a solar system.
7. a star of huge size and extreme brightness.
9. the galaxy that we are in.
12. a group of stars with structure in relation to each other.
14. a burning sphere of gas and dust
15. A unit of distance, measured by how far one could travel in a year, were they going at the speed of light.
16. all existing matter and space.
17. meteors that have fallen to Earth
19. frozen groups of rock and dust that orbit stars.
20. A group of solar systems, stars, and dust, bound together by gravity.
22. a void in space with a gravitational pull so strong that objects are sucked into it and cannot escape.
23. the study of space.
24. a spherical object that orbits around a star with no interruption in its path of orbit.
25. a diagram showing the relation between stars' brightness and their temperatures.

1. someone trained to explore space.
3. The space program run by the United States that managed to land a person on the moon.
4. how bright something is
5. small pieces of matter that float around in space.
6. a cloud of dust and gas that can be viewed to its brightness or the brightness surrounding it.
7. The infinite expanse in which objects exist and have positions in relation to each other.
8. the universal force that causes every object to have a pull on each other.
10. burning rocks without perfect shape that orbit stars.
11. the distance between Earth and the Sun; used to measure distances in our galaxy and galaxies nearby.
13. a bright and colorful explosion created by a dying supergiant
18. A system of planets or other objects in space that revolve around a star, due to its gravitational pull
21. a naturally occurring satellite that orbits around a planet.