Major Milestones Ahead for New Mexico Spaceport

This story was updated at 6:13 p.m. EST.

New Mexico's Spaceport America, which is being billed as the first "purpose-built" commercial spaceport in the United States, must conquer some challenging milestones that lie ahead if it is to open in late 2009 or early 2010.

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Leonard David
Space Insider Columnist

Leonard David is an award-winning space journalist who has been reporting on space activities for more than 50 years.