Cosmology – The Origin and Evolution of the Universe. Expanding Universe – consistent w/ a Big Bang? Olber’s Paradox Large Scale Structure and relation to Dark Matter Evidence for the Big Bang The Cosmic Microwave Background The abundances of the elementsBy chace
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Expanding Universe. Bigger Now. Used to be Much Smaller. d t. = v. D V. = age. gravity escape velocity. gravity escape velocity. gravity escape velocity. Black Hole. event horizon. V esc < C. V esc > C. gravity escape velocity. . singularity. V esc = C. Black Hole.
Expanding Universe . Robert Nemiroff Michigan Tech U. Physics X: About This Course. Officially "Extraordinary Concepts in Physics" Being taught for credit at Michigan Tech Light on math, heavy on concepts Anyone anywhere is welcome No textbook required
Expanding Universe. November 20, 2002. Hubble’s Law Expanding Universe Fate of the Universe. Final Exam will be held in Ruby Diamond Auditorium NOTE THIS!!! not UPL Dec. 11, 2002 10am-noon. Review of Particles and Telescopes. Dark Matter Particle physics atoms quarks
EXPANDING UNIVERSE. OLBERS PARADOX. “The night sky is dark.” This statement is called Olbers ’ paradox , after astronomer who discussed the subject back in 1823. Why is the darkness of the night sky so paradoxical?.
THE EXPANDING UNIVERSE. What is Cosmology?. The Study of the Universe its structure, origin, evolution and density Our universal “world view” Our cosmological model. Cosmology through the ages…. Universe models formed in many cultures . Mayan Temple aligned with the Sun.
The Expanding Universe. Except for a few nearby galaxies (like Andromeda), all the galaxies are seen to be moving away from us
The Expanding Universe. Discovery of Expansion. 1929 : Edwin Hubble measured the distances to 25 galaxies: Compared distances and recession velocities Calculated recession velocity by assuming the redshift of spectral lines is due to the Doppler Effect Discovered :
Section 7.3. The expanding universe. Hubble’s Ideas. ____________________________(1889-1953) An American astronomer One of the first to study _______________ Two of his major findings changed astronomy (1918-1929) Confirmed many other galaxies existed beyond the _________________________
The Expanding Universe. Tuesday, January 15. Thomas Digges (16 th century) proposed an infinite universe. Infinite universe: hard to reconcile with appearance of the night sky. Night sky is dark , with stars (small in angular size) scattered across it.
The Expanding Universe!. ASTRONOMY 101 HM Honors Project By Semere Sium Professor: Dr. Harold Williams. Inflation. Theory was created in 1980’s by Alan Gurth