Astr 1050     Mon., Dec 8, 2003

Refining the Big Bang

Implications of Slowing Expansion Rate

Is the expansion rate slowing?

Measuring deceleration using supernovae

“Cosmological constant”

Chapter 16: Origin of the Solar System

Patterns in Motion

Solar Nebula Model

Extra-Solar Planets

Characteristics of “Planets”

Slide 12

Patterns in Composition

Equilibrium Condensation Model

Growth of the Planetisimals

Evidence of Assembly Process?    Craters

Craters evident on almost all small “planets”

Clearing of the Nebula

Chapter 17: Terrestrial Planets

“Comparative Planetology”

Four Stages of Planetary Development

Earth’s Atmosphere: Greenhouse Effect

The Moon and Mercury

Patterns in Geologic Activity

Formation of an impact crater

Examples of craters on the moon

Moon: Giant Impact Hypothesis

Venus