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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
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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 • 10-43 s • 10-35 s • 10-35 s - 10-24 s • 10-12 s • 10-6 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 desireI hold with those who favor fire.But if I had to perish twiceI think I know enough of hateTo say that for destruction iceIs also greatAnd would suffice.