T+83: Falcon 9 Block 5, RL10 on Centaur V
b'Two events worth discussing happened while I was on vacation\\u2014the first Block 5 Falcon 9 took flight, and ULA selected RL10 for Centaur V.'
b'Two events worth discussing happened while I was on vacation\\u2014the first Block 5 Falcon 9 took flight, and ULA selected RL10 for Centaur V.'