What makes the destruction of <i>Columbia</i> even worse is that NASA had more or less seen the same issue before - shedding of the SRB foam insulation - not even two missions after the <i>Challenger</i> disaster. The mission was nearly lost for the same exact reason, failure of a compromised TPS.<p><a href="https://www.americaspace.com/2012/01/30/into-the-black-nasas-secret-shuttle-missions-part-two/" rel="nofollow">https://www.americaspace.com/2012/01/30/into-the-black-nasas...</a>