×
Log in
Upload File
Most Popular
Art & Photos
Automotive
Business
Career
Design
Education
Hi-Tech
+ Browse for More
The top documents tagged [guessed earth orbits]
Documents
Astro 101 Fall 2013 -- Lecture #2. Ancient Observers Noticed the “Wandering Stars” (e.g., planets) … They saw that sometimes they had “retrograde” motion
218 views
Documents
Astro 101 Fall 2013 -- Lecture #2
44 views