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Astro 001 - Section 4 Prof. Fox. Please find a seat in front (below the separating aisle). Course Materials. Required: Interwrite Personal Response System (PRS) Lecture-Tutorials for Introductory Astronomy , by Prather, Slater, Adams & Brissenden

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Astro 001 - Section 4

Prof. Fox

Please find a seat in front (below the separating aisle)


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Course Materials

  • Required:

    • Interwrite Personal Response System (PRS)

    • Lecture-Tutorials for Introductory Astronomy, by Prather, Slater, Adams & Brissenden

    • Edmund Scientific Sky & Planet Locator (“planisphere”)

  • Recommended and very useful:

    • Astronomy: A Beginner's Guide to the Universe by Chaisson & McMillan, Fifth Ed. (includes web access)

    • Discounted “bundles” available at the bookstore


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The Astronomical Universe

  • What’s up there, and why?

  • Earth’s place in the Solar System… Galaxy… Universe

  • Conceptual focus

  • Scientific mode of thinking and problem-solving


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Course Grading

  • Participation

    • In class (PRS)

    • Online (Angel)

  • 11 Homeworks (Angel)

  • Two Projects

    • Spectroscopy

    • Telescopes

  • Four Exams

    • Three in-class

    • Final


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Keys to Success

  • Prepare for class

    • Print out lecture notes and/or slides

    • Use these to take notes

  • Attend class

    • Lectures are the basis for exams

    • Participation counts

    • Lots of review – as we go, and preparing for Exams

  • Ask questions

    • During class

    • Office hours & email

  • Prepare for Exams

    • Practice questions (book, web)

    • Participate in the Angel Discussion Forum


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Course Projects

Evenings, Mon-Thu

  • Spectroscopy

    • Open for one week, Feb 4-12

    • Classroom activity + Exploration of downtown

  • Telescopes

    • Open to all from Jan 22 to Feb 14

    • Afterwards: Open according to last names

    • Complete by the end of the period defined by your last name

Rooftop observing


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Astronomy Diagnostic Test

  • Take this week via Angel

  • 40 minutes, timed

  • Taking the test is part of your grade (Participation)

  • Score does not matter but you must attempt all questions

  • Due by Thursday’s Lecture

  • “Next” to get next question

  • “Submit” only at the very end

This is not a hint!


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Discussion Forums

  • Set up on Angel

  • NYT Science Times

    • Discuss astronomy news and features from the New York Times (each Tuesday)

    • Also discussed in-class each Tuesday

  • Exam Review

    • Ask and answer questions about exam material to prepare for tests

  • Points for participation

NYT Science Times


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STRUCTURE OF COURSE

Visual and Historical Astronomy



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STRUCTURE OF COURSE

Visual and Historical Astronomy

Gravity



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STRUCTURE OF COURSE

Gravity

Light



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STRUCTURE OF COURSE

Solar System

Gravity

Light



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STRUCTURE OF COURSE

Stars

Solar System

Gravity

Light



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STRUCTURE OF COURSE

Milky Way

Stars

Solar System

Gravity

Light



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STRUCTURE OF COURSE

Milky Way

Galaxies

Stars

Solar System

Gravity

Light



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STRUCTURE OF COURSE

Universe

Galaxies

Stars

Solar System

Gravity

Light



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Life

Universe

Galaxies

Stars

Solar System

Gravity

Light



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“Space is big. Really big.” — The Hitchhiker’s Guide to the Galaxy


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The Cosmic Calendar

See also: Southwest stairwell in Davey Lab (begin on Floor 5)


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Cosmic Countdown

  • The “Cosmic Year” encloses the history of the Universe in a single year

  • 13.7 billion : 1 compression

  • Divides into 31 million “Cosmic Seconds”

  • One “Cosmic Second” corresponds to 442 years

  • Counting backwards, then…


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0s: 2008 C.E.

2008 Presidential candidates Hillary Clinton & Barack Obama


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1s: 1565 C.E.

Spanish conquest of the Incan Empire, 1541 CE


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2s: 1123 C.E.

Norman conquest of 1066 CE – Bayeaux Tapestry


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3s: 681 C.E.

Birth & Rise of Islam – 632 (red) to 661 (pink) to 750 CE (yellow)


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4s: 239 C.E.

“Three Kingdoms City” in Wuxi, China, 222-263 CE

Palace of Diocletian, Roman Emperor from 284–305 CE


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5s: 203 B.C.E.

Hannibal crossing the Alps in 202 BCE, by Henri Paul Motte


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6s: 645 B.C.E.

King Assurbanipal of Assyria founded the world’s first library at Nineveh, ca. 650 BCE


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7s: 1087 B.C.E.

Kings Saul and David (1006–965 BCE) rule over the Israelites


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8s: 1529 B.C.E.

Shang Dynasty (ca. 1600–1046 BCE) artifacts from China


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9s: 1971 B.C.E.

Pharaohs Amenemhet I (1991–1962 BCE; pyramid and tomb) and Senusret I (1971–1976 BCE; bust) of the 12th Dynasty


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10s: 2413 B.C.E.

The Great Pyramid, completed ca. 2560 BCE during the 4th Dynasty


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15s: 4623 B.C.E.

  • First systems of writing and proto-writing

  • First states and cities

  • Dawn of civilization

The Tartaria tablets, ca. 5500 BCE


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Next year: 13.7b years ago

  • Big Bang!

    (We end at the beginning)

    (Formation of the Earth in about 4 months)


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Large Numbers

Any number that you can add 1 billion to without noticing.

  • Age of Universe: 13.7 billion years, or 1017 seconds

  • Neurons in human brain: 100 billion

  • Synapses in human brain: 150 trillion

  • Protons in the Visible Universe: 1054

  • Proton volumes in the Visible Universe: 1089


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Large Numbers

Recall:

1054 = 1,000,000,000,000,000,000,

000,000,000,000,000,000,

000,000,000,000,000,000

… and so forth


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Large Numbers

Recall:

1054 = 1,000,000,000,000,000,000,

000,000,000,000,000,000,

000,000,001,000,000,000

… and so forth


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More Large Numbers

  • Lifetime of M-dwarf star on the main sequence: 1012 years

  • Death of the Milky Way’s last stars: 1014 years

  • Proton decay timescale: More than 1035 years (Super-K)

  • Doubling times during the epoch of Cosmic Inflation: ~1012 (Linde)

Planet orbiting an M-dwarf star


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“Space is big. Really big.” — The Hitchhiker’s Guide to the Galaxy


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