Could still be useful in case anything ever happens to our solar system.
But 22 lightyears means it's still going to be one-way trip, even with matter/anti-matter engines. Unless we develop immortality by then of course...
But 22 lightyears means it's still going to be one-way trip, even with matter/anti-matter engines. Unless we develop immortality by then of course...
Predicting what is impossible based on existing knowledge hasn't worked too well in the past.
http://www.daviddarling.info/encyclopedia/O/one-g_spacecraft... has other examples. They are round-trip, not one way, hence my describing my math as very rough.
What if there offspring just aren't that bright? How can you ensure the mission succeeds over the course of several(/many?) generations?
I'd agree that it's not a one-way trip for humanity, though. Once some of us get there (e.g., progeny of the original crew), eventually some of us could get back to Earth too (at some later date). Assuming Earth isn't destroyed by that point...