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 Tonight’s workshop

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

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

Registration and Logistics Astronomy + Cosmologies: Tues.&Thus.5-10pm, 16 credits (including seminar) CRN Science Seminar: Tues. & Thus. 5-7 pm Lib credits = CRN credits = CRN 30515

Schedule and our Web pages Bookmark this site! /curricular/astro2003/home.htm Read key parts together, e.g. books&equipment Read covenant

Take the green survey then take a break (bring food to class if you like) Class resumes promptly at _____.

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?

Looking at the night sky – what you see depends on where you are, in space, time and culture.

Astronomical distances and sizes are … astronomical, so we use notations to makes huge numbers more tractable: Let’s look at Box 1-2 (p.11) together

Even if we don’t 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.

In this week’s Space and Time workshop, you’ll use your hands to find angles. Also discover the field of view of your binocs.Space and Time

1 AU = 93 million miles = 150 million km 1 parsec ~ 3 light years 2  radians = 360 degrees 1 degree = 60 arcminutes 1 arcminute = 60 arcseconds

Weekly homework and quizzes Do the homework with answers in back Ask questions about HW to learn moreAsk questions Don’t turn it in – put HW in your portfolioportfolio Take the online quiz each week – register tonightregister tonight

Tonight’s workshop: Planispheres & flashlights Flashlights: paint them red Planispheres: practice in class read Dawson pp.1-25, and Ex. 1, 8, 9Dawson18, 9 Go outside and look at the sky together In case of clouds: use Starry NightStarry Night Post your workshop report on Fridayworkshop report