What physical processes have shaped the Moon? In this lecture, I
describe the surface features of the Moon (the Maria and Highlands), how
crater density tells us the relative ages of terrains, and what we have
learned about Moon rocks returned by astronauts and robotic probes. I
will also discuss what is known about the interior of the Moon, and
review wh ... Show More
Oct 2007
Lecture 29: The Earth's Atmosphere
What is the composition and structure of the Earth's atmosphere? Why is
it as warm as it is, and how did it form? Today I will describe the
composition and structure of the atmosphere, the Greenhouse Effect, the
Primordial Atmosphere, and Atmospheric Evolution. The Earth's
atmosp ... Show More
41m 51s