Class Notes (923,174)
CA (543,135)
UTSC (33,027)
Astronomy (104)
ASTA01H3 (78)
Lecture 4

emphasis of lecture 4 and 5

6 Pages
78 Views

Department
Astronomy
Course Code
ASTA01H3
Professor
Rick Halpern

This preview shows pages 1-2. Sign up to view the full 6 pages of the document.
Lecture 4: The Copernican Revolution
Geocentric Universe
oAncient astronomers were aware about sun, moon, mercury,
venus, mars, Jupiter and saturn
oPlanet: planets change speed, brightness and have retrograde
motion
oInferior planets: Mercury, Venus
oSuperior planets: Mars, Jupiter and Saturn
oInferior planets have inferior conjunction (closest to earth)
and superior conjunction (farthest from the earth)
oSuperior planets go through opposition(close to earth) and
conjunction (farthest away)
oInferior planet never move too far from the sun
oSuperior planets are not tied to sun and experiences
retrograde motion
oSuperior planets are brightest at opposition
www.notesolution.com
oInferior planets are brightest near inferior conjunction
Ptolemaic Model of Solar systems and Epicycles
oCenter of the epicycle orbits the Earth called a deferent. The
planet orbits the epicycle.
oThis model can correctly predict retrograde motion
oOnly the moons orbit is correct in this model
Copernican Revolution: Heliocentric Model
oSun is the center of the solar system
oDiagram
oRetrograde motion occurs as Earth passes Mars
Birth of Modern Astronomy
oGalileo discovered mountains on moon, sunspots, rotation of
sun, jupiters moons, venus phases
oJupiters moon was nail in the coffin to confirm not all object
revolve around earth
oPhases of venus cannot be explained by geocentric model
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
Lecture 4: The Copernican Revolution Geocentric Universe o Ancient astronomers were aware about sun, moon, mercury, venus, mars, Jupiter and saturn o Planet: planets change speed, brightness and have retrograde motion o Inferior planets: Mercury, Venus o Superior planets: Mars, Jupiter and Saturn o Inferior planets have inferior conjunction (closest to earth) and superior conjunction (farthest from the earth) o Superior planets go through opposition(closeto earth) and conjunction (farthest away) o Inferior planet never move too far from the sun o Superior planets are not tied to sun and experiences retrograde motion o Superior planets are brightest at opposition www.notesolution.com
More Less
Unlock Document


Only pages 1-2 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Don't have an account?

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