00:00Of course, not everything will work out and there will be setbacks.
00:04The first reactors will cause problems.
00:07The first nuclear drives will be postponed.
00:10And architectures will have to be redesigned.
00:13But the course is set just as the railway didn't come about because
00:17people wanted to travel for the romance of it.
00:19Or electricity didn't come about because light bulbs are so pretty.
00:24In the same way, nuclear infrastructure in space isn't coming because it
00:28sounds cool, but because it makes sense economically and in terms of physics.
00:33At least as long as we don't have another groundbreaking energy technology yet.
00:38And that brings us to a point that can be stated quite plainly.
00:42Spaceflight will change more fundamentally over the next 20 to 30 years than it has over the last 50.
