Big Bang Theory.

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Presentation transcript:

Big Bang Theory

Cosmology Study of deep space and the dynamics of universe other galaxies stars (nebula, supernova…) origin of the universe black holes

Big Bang explained Watch for review http://www.youtube.com/watch?v=xsQ1XmqEe6M

Big Bang Theory 13.7 bya Entire universe was once a dense, hot, supermassive ball (singularity). Expansion(bang) hurled material in all directions Allmatter/space/time created in that instant

Steven Hawking- Big Bang https://www.youtube.com/watch?v=gs- yWMuBNr4

Evidence that supports the Big Bang Theory 1.Cosmological Red Shift- all galaxies (outside the Local Group) are showing a red shift

Equal expansion

Hubble’s Law Farther galaxies are receding faster Even space is expanding!

What is the universe expanding into?

2. Cosmic Background Radiation- Microwaves If the universe started HOT, there should be heat leftover Heat was found as microwaves (Penzias and Wilson calculated the exact temperature this radiation would have cooled to since the Big Bang- Nobel Prize 1978)

The correct amount and temperature! NASA’s COBE and WMAP satellite able to detect cosmic microwaves The correct amount and temperature!

PLANCK image of CBR

3. Abundance of light elements Universe is full of abundant H and He

Big Bang theme song https://www.youtube.com/watch?v=CMS Yv_Z4SI8

Misconceptions about BB No center Didn’t start BIG Doesn’t explain ORIGIN of universe Not an explosion Expansion

Future of the Universe? Keep expanding- -Universe will last forever Data supports this Big Crunch- Gravitational contraction- Big Bang in reverse- no data to support this BIG RIP

Big Rip https://www.youtube.com/watch?v=JaIm VFRpOR8

What caused the big bang? Let’s have the noble prize winner in physics tell you.. http://www.youtube.com/watch?v=0ITsc mLp3Vs&safe=active

Dark Matter https://www.youtube.com/watch?v=QAa 2O_8wBUQ