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

-measured by WMAP and COBE

#2: Universe is mostly H and He

Evidence for BB #1: most galaxies and stars are red-shifted

Big Bang Part 1:

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

L2 L3 Tuesday, June 16 F

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.....)

Click here to download:

11Final ReviewL3.doc (45 KB)

(download)

Click here to download:

Final Exam Review questions.doc (350 KB)

(download)

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