Astronomy and Cosmology

1
Astronomy and Cosmology

• Welcome and introductions
• Registration
• Schedule and our Web pages
• Books and equipment
• Assignments and Covenant
• Survey and break
• Introduction to Astro Cosmo
• Tonights workshop

2
Welcome to Astronomy Cosmology

• Who am I? E.J. Zita, Ph.D, physics (call me
  Zita)
• Email zita_at_evergreen.edu
• Office hours before/after class, online, or by
  appointment
• What is Astronomy? What are Cosmologies?
• Who are you? Introduce yourselves BRIEFLY and
  get to know each other

3
Introductions and partners

• Tell us your NAME and ONE thing you hope to learn
  this quarter
• Find a classmate trade phone numbers, email,
  and addresses
• Post this info online together
• Take responsibility for getting information to
  each other if you miss anything.

4
Registration and Logistics

• Astronomy Cosmologies Tues.Thus.5-10pm, 16
  credits (including seminar) CRN 30181
• Science Seminar Tues. Thus. 5-7 pm Lib 2219
• 8 credits CRN 30514
• 4 credits CRN 30515

5
Schedule and our Web pages

• Bookmark this site! http//
• 192.211.16.13/curricular/astro2003/home.htm
• Read key parts together, e.g. booksequipment
• Read covenant

6
Take the green surveythentake a break (bring
food to class if you like)Class resumes
promptly at _____.
7
Introduction to Astro Cosmo

• Astronomy what is in the sky? Why does it look
  like that? How did it get there? How and why
  does it change?
• Cosmologies What is the origin, structure, and
  evolution of the Universe? What does it mean to
  me and my society? How did/do other cultures
  understand the structure and meaning of the
  universe?

8
Looking at the night sky what you see depends
on where you are, in space, time and culture.
9
Astronomical distances and sizes are
astronomical, so we use notations to makes huge
numbers more tractable Lets look at Box 1-2
(p.11) together
10
Even if we dont know the distance to an object,
angles are easy to measure. By total
coincidence, the Sun and Moon happen to subtend
nearly the same angle from Earth this epoch,
hence eclipses.
11
In this weeks Space and Time workshop, youll
use your hands to find angles. Also discover the
field of view of your binocs.
12
2p radians 360 degrees 1 degree 60
arcminutes 1 arcminute 60 arcseconds
1 AU 93 million miles 150 million km 1 parsec
3 light years
13
Weekly homework and quizzes

• Do the homework with answers in back
• Ask questions about HW to learn more
• Dont turn it in put HW in your portfolio
• Take the online quiz each week register tonight

14
Tonights workshop Planispheres flashlights

• Flashlights paint them red
• Planispheres practice in class
• read Dawson pp.1-25, and Ex. 1, 8, 9
• Go outside and look at the sky together
• In case of clouds use Starry Night
• Post your workshop report on Friday