: From what I gather, the cost of the PoA taking off from Reach would be so
: astronomically huge, that I think we can say it's not canon again, since
: it's kind of impossible. Do you want to weigh in Stephen?

Hard to say what the actual mass of the Autumn is. The only canonical value we had was a UNSC frigate or destroyer at 8,000 tons, which I think is a very bad estimate based on real world large items and even some fictional ones.

But if the Autumn was not really that massive compared with its size, then maybe those 8 thrusters could launch it. Depends on it's fuel supply/power source. It's not like the calculation involves escape velocity. It's a different situation when the flight is powered all the way to space.

I do know the size of the Autumn's thrusters, but not really what drives them.