Class Notes (836,147)
Canada (509,656)
AST101H1 (417)
Michael Reid (157)
Lecture 4

Lecture 4 - Night Sky Constellations and Seasons - September 19.docx

1 Page
45 Views
Unlock Document

Department
Astronomy & Astrophysics
Course
AST101H1
Professor
Michael Reid
Semester
Fall

Description
September 19, 2013. Lecture 4 –The Night Sky, Constellations, and Seasons Why do we have seasons?  The orbit is almost circular, it’s not about distance between the Earth and Sun  It’s about the amount of energy reaching/touching the Earth’s surface o Per unit area  Earth is tilted by 23.5 degrees, seasons are determined by which hemisphere is tilted towards/away from the sun  Do other planets have seasons? o Jupiter’s tilt is 5 degrees, no seasons  The plane where the Earth moves around the Sun is called Ecliptic Trying to make sense of it….  We invent the term “celestial sphere” to define the dome of stars surrounding Earth,
More Less

Related notes for AST101H1

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit