The Cosmic Microwave Background
After some period of time following the big bang, gravity condensed clumps of matter together. The clumps were gravitationally pulled towards other clumps and eventually formed galaxies. It is extremely difficult to model how this clumping may have occurred, but most models agree that it occurred faster than it should have. A possible explanation is that right after the big bang the Universe began a period of exaggerated outward expansion, with particles flying outward faster than the current speed of light. This explanation is known as inflation theory, and has widespread advocacy within the astrophysics community because it reconciles theory with observation. It should be noted, however, that inflation theory is not directly verifiable.
No comments:
Post a Comment