Comment Re:The event speaks for itself (Score 2) 316
What alternatives are there?
Railguns (or any other sort of ground-based propulsion) physically cannot put something into orbit, and practically speaking, they can only provide a moderate boost. You'd still need at least a full rocket stage, possibly two, to actually get to orbit.
Ground-based laser propulsion might work, but it's never been tested at scale. And if there is a catastrophic failure, it will be on the ground-based components, not the vessel. In other words, the big explosion will be on the ground instead of the air.
Air-breathing rockets are even more dangerous than traditional ones, since they spend more time in the atmosphere at extreme speeds and temperatures.
Electric rockets (ion engines of various types) don't have the thrust to break out of Earth's gravity.
Nuclear thermal rockets might work, but they won't be much safer IMO.
The problem ultimately boils down to "it takes too much energy to get to space". You're going from at best 400-something m/s to Mach 20+. That takes a lot of energy, and so we have to use very energetic means to do so.