Documents During the nineteenth century, scientists suggested that the Earth was hundreds of millions of years...

During the nineteenth century, scientists suggested that the Earth was hundreds of millions of years old. Today we know the Earth is 4.5 Billion years old. PROBLEM – HOW…

Documents Astronomy 1 – Fall 2014 Lecture 9, November 4, 2014.

Presentation for perspective graduate students 2006 Astronomy 1 – Fall 2014 Lecture 9, November 4, 2014 1 Reminder: You Are Invited! Astro 1 Observing Session (Optional,…