click below
click below
Normal Size Small Size show me how
Chapter 4 Science
Lesson 6 The Expanding Universe
Term | Definition |
---|---|
Big Bang | the initial explosion that resulted in the formation and expansion of the universe |
Hubble's Law | the observation that the farther away a galaxy is, the faster it is moving away |
Cosmic background radiation | the electromagnetic radiation left over from the big bang |
Dark Matter | matter that does not give off electromagnetic radiation but is quite abundant in the universe |
Dark Energy | a mysterious force that appears to be causing the expansion of the universe to accelerate |