Manuscript/Mixed Material Astronomy 490, Cornell University : lecture notes

About this Item

Astronomy 490, Cornell University : lecture notes
Contributor Names
Sagan, Carl (Author)
Created / Published
Subject Headings
-  Astronomy
-  Sagan, Carl
-  UFOs
-  Critical thinking
-  Unidentified flying objects
-  Skepticism
-  Science--Study and teaching
-  Astronomy--Study and teaching
-  Science
-  Critical thinking--Study and teaching
-  Astrology
-  Cornell University
-  Manuscripts
-  Lecture notes for the first day of Carl Sagan's critical thinking course, Astronomy 490, at Cornell University. The course focused on critical thinking and science, exploring issues around UFOs, astrology, and the nature and limits of scientific argumentation.
Dimensions in inches: 11 x 8 1/2
Source Collection
The Seth MacFarlane Collection of the Carl Sagan and Ann Druyan Archive
Manuscript Division
Online Format
IIIF Presentation Manifest
Manifest (JSON/LD)

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Citations are generated automatically from bibliographic data as a convenience, and may not be complete or accurate.

Chicago citation style:

Sagan, Carl. Astronomy 490, Cornell University: lecture notes. 1986. Manuscript/Mixed Material.

APA citation style:

Sagan, C. (1986) Astronomy 490, Cornell University: lecture notes. [Manuscript/Mixed Material] Retrieved from the Library of Congress,

MLA citation style:

Sagan, Carl. Astronomy 490, Cornell University: lecture notes. 1986. Manuscript/Mixed Material. Retrieved from the Library of Congress, <>.

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