Lecture15 - Big Bang, Black Holes No Holes, No Math...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
ig Bang, Black Big Bang, Black oles No Math Holes, No Math ASTR/PHYS 109 Dr. David Toback Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Prep for Today (Is now due) – L15 Reading: BBHNM 2 BBBHNM 12 Reading questions: hapter 2 Chapter 12 End-of-Chapter Quizzes: Chapter 10 Paper Stuff Paper 1 Revision: CPR due Fri 6PM Paper 2 Submission: Was Wed 4PM in Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 3 CPR
Background image of page 2
Overview Finished: The Exploding Universe This Time: Expansion of pace- ime and General Space Time and General Relativity After That: Photons and ydrogen in the Universe Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 4 Hydrogen in the Universe
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Outline eneral Relativity General Relativity and Expanding Space-Time xpanding Space and Expanding Space and Red-Shifts Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 5
Background image of page 4
Recapping the Data Galaxies are moving way from us faster away from us, faster if they are further way AND moving away AND moving the SAME WAY me way in ALL same way in ALL DIRECTIONS Simplest explanation: An explosion ! Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 6
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Is this right? What’s wrong with the simple explosion explanation? It’s consistent with ll the data but all the data, but only if we’re at the enter of the center of the Universe and not Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 7 moving
Background image of page 6
What if we Think about it Differently Maybe it just “looks” like we’re at the center of the Universe nd not moving and not moving Could this be true? Could be, but what’s the reason it looks like we re at the center? Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 8
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Back to General Relativity Space-time can change E.g. Mass causes it to curve and stretch What if space-time is expanding ? Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 9
Background image of page 8
Balloon Example Can think of Space-Time like the SURFACE of a balloon Balloon is a two dimensional xample/analogy example/analogy There is no inside, space IS just the surface As space-time expands, the distance between any two spots increases, but there is no spot ON THE SURFACE that is the center of the xpansion Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 10 expansion
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Expanding Space Evidence for the Big Bang Topic 2: Expanding Space-Time Big Bang, Black Holes, No Math 11 http://bigbang.physics.tamu.edu/Figures/StolenAnimations/originredshifts2.swf
Background image of page 10
The Expanding Universe It’s not just galaxies moving through
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/06/2012 for the course PHYS 109 taught by Professor Davidtoback during the Fall '11 term at Texas A&M.

Page1 / 37

Lecture15 - Big Bang, Black Holes No Holes, No Math...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online