As things currently stand, the Space Shuttle program will be suspended in 2010, as the existing orbiters reach the end of their useful lives. The U.S. will then have a window of approximately 5 years in which it will have no independent capacity for manned space flight until the Orion system comes on line. During that 5 year period, American astronauts are expected to travel to and from the International Space Station on Russian ships.

That plan took a big hit on April 19, when a returning Soyuz command module reportedly failed properly to separate from its service module, endangering the 3 astronauts on board (including one American). This was the second consecutive Soyuz mission that ended this way -- strongly suggesting a systemic flaw. With the Russians downplaying the problem, there's a real concern that it may not be safe to put all our eggs in the Soyuz basket.

Several NASA advocates in Congress -- Floridians Bill Nelson and Dave Weldon -- are beginning to suggest that we need some sort of plan 'B:'

"We could have six astronauts up on the space station and literally no way to get them down and all the people of the world will be in the sad prospect of watching them die as they run out of food and supplies," said Rep. Dave Weldon (R - Indialantic)....

Senator Nelson said one problem is President Bush has put in motion the plan to shut down the shuttle program during the next president's term. By the time the next president takes office, it will be too late to try to keep the shuttle program going.

In the wake of the latest Soyuz accident, the Orlando Sentinel argued for an additional $2 billion for the speedy development of Orion, to reduce the window between Space Shuttle and Orion from 5 years to 3 years. This is an issue that bears watching; right now $2 billion seems a small price to pay to for self-sufficiency.