> A European Space Agency mission arriving five years later, called Hera, will check to see if the mission worked. Maybe it's technically infeasible, but it se

> A European Space Agency mission arriving five years later, called Hera, will check to see if the mission worked. Maybe it's technically infeasible, but it seems to me like the main benefit we would get out of a mission like this is to actually have another craft standing by to record it as the collision happens.