Comment Re:Especially since NASA... (Score 3, Informative) 200
Remember a little thing called the Challenger Disaster?
From: http://en.wikipedia.org/wiki/Space_Shuttle_Challenger_disaster
"Thiokol engineers argued that if the O-rings were colder than 53 F (12 C), they did not have enough data to determine whether the joint would seal properly. This was an important consideration, since the SRB O-rings had been designated as a "Criticality 1" component—meaning that there was no backup if both the primary and secondary O-rings failed, and their failure would destroy the Orbiter and its crew."
