Education Whatsa planet

1. What is a “Planet”? Originally: “planet” = “wanderer” (Greek root) refers to apparent motion of planets in sky among stars Earth-based; no astrophysical utility…

Documents Astronomy 1 – Fall 2014 Lecture 12; November 18, 2014.

Presentation for perspective graduate students 2006 Astronomy 1 – Fall 2014 Lecture 12; November 18, 2014 1 Algol (beta Persei) provided the first clear evidence of mass…