"NASA is defending its Space Launch System against a new analysis arguing that SLS is too expensive to fly and is "draining away the lifeblood - funding - of the space program."
"I understand the premise of the article," NASA Deputy Associate Administrator for Exploration Systems Development Dan Dumbacher told al.com and The Huntsville Times in a July 23 interview, "but I think we need to realize there's a broader set of trades that really form up the decision process."
Dumbacher referred to "Revisting SLS/Orion launch costs" by John Strickland published July 15 on the website The Space Review. Strickland is a member of the board of directors of the National Space Society, but wrote the article independently."
Update: The Congressional debate over NASA's asteroid capture mission ignores the ageny's real spaceflight problem, Houston Chronicle
"Being the subject of congressional infighting, of course, does NASA no good. But this battle is a distraction from NASA's real problem, which neither Democrats nor Republicans are willing to acknowledge. Namely, the space agency is being tasked with building a huge and powerful rocket it will not be able to afford to fly."