Earth, Moon, and Impact

The Single Most Valuable Product of the

Space Program

Crescent Earth

Himalayas from Space Shuttle

Space Shuttle and Aleutians

Fringing Reefs

Icebergs, Antarctica

“You Can’t See Borders From Space”

Mexican Border

Mexican Border

Menominee County, WI

Landsat View of

Green Bay

Landsat View of Green Bay

Landsat view of

Washington D.C.

Radar Image of

New York City

Spy Satellite Views of Soviet Aircraft Carrier

Spy Satellite View of Soviet

Airfield

World Trade Center, September 11, 2001

And Now For Something Completely Different….

Aurora From Space

Gulf Stream in Infrared

Ultraviolet View of Earth

The Ocean Floor From Space

Earth and Moon Together

An Eclipse of the Sun – By Earth

Impacts on Earth

Recent Impact – Meteor Crater

Manicouagan, Quebec

Sudbury, An Ancient Impact Site

A Shatter Cone

Fallback Breccia

Bessel: A Simple Crater

Ejecta around

Timocharis

Tycho: A Central-Peak

Crater

How Central Peaks Form

Upheaval Dome, Utah

Schrodinger: A Peak-Ring Crater

Mare Orientale A Multiple-Ring Impact

Basin

Craters and Planetary History

• Superposition

• Crater Saturation

• Crater Degradation

Superposition

Crater Saturation

Crater Degradation

Mega-Impacts:

As Usual, Gary Larson Gets There

First

Computer Simulations by H.J. Melosh (University of Arizona)

Lunar Rilles

How Lunar Rilles May Form

A “Lunar” Landscape?

Real Lunar Mountains

How We Got It Wrong