Astronomy and Cosmologies week 1, Spring 2005. Welcome and introductions Schedule and our Web pages Books and equipment Assignments and Covenant Survey and break Introduction to Astro & Cosmo Tonight’s workshop. Welcome to Astronomy & Cosmologies.
Cosmologies: What is the origin, structure, and evolution of the Universe?
* PIQs = Points, Insights, and Questions (teams)
* one-page essays
* team research projects
* online quizzes
… get your photo taken,
…then take a break
(bring food to class if you like)
Class resumes promptly at _____
We use Scientific Notation to make huge numbers tractable
Let’s look at Box 1-2 (p.11) together.
You will get more practice with the Estimating ET workshop.
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 at the moment. Therefore, we can have 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.
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