THE ORIGIN AND FATE OF THE UNIVERSE

The Scale of the Universe The solar system (see illustration)

The Scale of the Universe Nearby Star systems (see illustration)

The Scale of the Universe Galaxies –spiral galaxies (the Milky Way and the Andromeda galaxies) the arms the central bulge the halo and globular clusters

The Scale of the Universe (cont.) Galaxies –irregular galaxies –elliptical galaxies

Large Magellinic Cloud, irregular galaxy M84 Elliptical Galaxy

The Scale of the Universe (cont.) The Local Cluster or Group (see illustration)

The Scale of the Universe (cont.) Super clusters (see illustration)

The Scale of the Universe (cont.) The Universe (see illustration)

Newton’s Model Infinite and static Olber’s paradox

Evidence of Expansion Hubble’s law –doppler shift –recession velocity Vs. distance

Evidence of Expansion Background radiation –doppler shift

The Creation of the Universe The big bang –time line s s s s s s 2 s 3 minutes 300, 000 years

The Creation of the Universe The big bang –the laws of physics –where –when

The Fate of the Universe Critical mass / density

The Fate of the Universe Curvature of space –open (saddle or negative curvature) –critical (flat or no curvature) –closed (spherical or positive curvature)

Some say the world will end in fire. Some say ice. From what I’ve tasted of desire I hold with those who favor fire. But if I had to perish twice I think I know enough of hate To say that for destruction ice Is also great And would suffice.