Senators Call For Heavy-Lift Rocket Competition
By Amy Svitak .

California Democratic Sens. Dianne Feinstein and Barbara Boxer are asking NASA to compete the propulsion systems for a congressionally mandated heavy-lift rocket that is expected to leverage billions that the agency has invested in existing space shuttle and Ares rocket assets.
In a May 27 letter to NASA Administrator Charles Bolden, the lawmakers assert a competitive bidding process ...
