Professor, Arizona State University, School of Earth and Space Exploration
Latest blog post: SpaceShipTwo: Much More Than Just a Roller Coaster for the Rich
The recent tragedy in the stratosphere above the Mojave Spaceport in California, and the previous week's dramatic unmanned rocket explosion at NASA's Wallops Island launch facility in Virginia, are stark, related reminders that getting to space is hard. Read Jim's Huffington Post Science Blog Post to learn more.