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Lecture 1: Introduction Lecture 1: Introduction to Cosmology to Cosmology Astronomy 5: The Formation and Evolution of the Universe Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Sandra M. Faber Spring Quarter 2007 Spring Quarter 2007 UC Santa Cruz UC Santa Cruz

Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

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Page 1: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

Lecture 1: Introduction to Lecture 1: Introduction to CosmologyCosmology

Astronomy 5: The Formation and Evolution of the UniverseAstronomy 5: The Formation and Evolution of the UniverseSandra M. FaberSandra M. Faber

Spring Quarter 2007Spring Quarter 2007

UC Santa CruzUC Santa Cruz

Page 2: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

The Andromeda galaxy: big sister of our Milky Way

2 million light years away

60,000 light years across

x

Page 3: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

The Andromeda galaxy: big sister of our Milky Way

2 million light years away

60,000 light years across

Page 4: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

Andromeda is composed of billions of stars

Page 5: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

Spirals are flattened, rotating disks seen at various

inclinations

Page 6: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

Spirals are flattened, rotating disks seen at various

inclinations

Page 7: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

Spirals are flattened, rotating disks seen at various

inclinations

Page 8: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

Our Milky Way is a spiral. We live in its disk.

x

Page 9: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

The Milky Way as seen at dark sites

Page 10: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

The constellation Orion against the backdrop of the Milky Way -- a sense of

scale

Page 11: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

The constellation Orion against the backdrop of the Milky Way -- a sense of

scale

Page 12: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

The Orion nebula imaged by the Hubble Space Telescope

Page 13: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 14: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz
Page 15: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

QuickTime™ and aMotion JPEG A decompressor

are needed to see this picture.

Page 16: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 17: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 18: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 19: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 20: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 21: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 22: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality

Page 23: Lecture 1: Introduction to Cosmology Astronomy 5: The Formation and Evolution of the Universe Sandra M. Faber Spring Quarter 2007 UC Santa Cruz

A major recent discovery: color bimodality