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Comment Re:A four million year orbit (Score 2) 74

I get your point, but it is pretty speculative to suggest that travel faster than the speed of light will ever be possible. No physical law of nature prevented any of the advances you've quoted - they were just engineering challenges.

No current physical law. All the advances were preceded by a new understanding of how the universe worked. All the advances that will come, will also be preceded by new understandings.

I postulate that the only constant is our own ignorance. I will not argue that we may reach a point where we know everything and thus can't advance any more. I just don't believe that point exists, but I have nothing to support that belief.

Over a span of even thousands of years I'm sure we'll be impressed with what mankind achieves with engineering.

However, I don't think anybody can make any bets either way on whether there are ways to effectively travel faster than the speed of light. There may or may not be new physics out there that we can rely on. We don't get to invent the laws of nature - we can only exploit what we discover, and there may or may not be anything useful to discover.

Oh, I see we did reason in the same direction. Ok, then I agree with you in everything but the "may not be anything useful to discover".

Comment Re:A four million year orbit (Score 5, Informative) 74

"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?" - The Quarterly Review, March, 1825.

"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced." - Scientific American, January 2, 1909.

"A rocket will never be able to leave the Earth's atmosphere." - The New York Times, January 13, 1920

"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth—all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances." - Lee De Forest, 1957

They are 4.3 billion light-years away. They have already orbited each other a thousand full cycles since the observation (Well, you know what I mean.)
and they will spin another thousand before anything from here can reach them.

Comment A four million year orbit (Score 3, Insightful) 74

just 450 light-years apart and orbit each other every 4 million years.

I can't stop thinking that a four million year orbit means humans will have populated that galaxy before those black holes have completed one more cycle.

We're like smart bacteria inside a human being. We could learn about the season cycle, but but the time winter comes, innumerable generations of our descendants will already have killed our host and traveled to other ones.

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