At our church today, the pastor said, "It is an old saying that 'the blood of the martyrs is the seed of the church.' We can update that to say, 'The blood of our fallen explorers is what will propel us forward to continue the exploration of our universe.' This terrible accident will not stop us; it will only give us more reason to continue their work and not be tethered to earth."
Or words to that effect; I am going from memory.