#3: CMB radiation exists; is the "echo" (of energy) left by the BB

-measured by WMAP and COBE

Big Bang Part 1:

13-15 bya- BANG! outward expansion, hot; collisions; formed simple elements, then stars, then our ss (5 bya)

PLEASE RETURN BOOKS TO CLASS!

 

Period 1:

-work on exam review packet

 

Periods 2, 4, 7:

-The Big Bang in 140 characters or less (stay tuned…..)