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Wednesday, October 18, 2023

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Winter

4.4 light years in 2 years.. ?

I wasn't aware we'd found out how to travel 2x the speed of light.

What'd the energy costs look like if we went there at 1/10th the speed of light? Assuming a world in which computers could reliably steward a small colony of humans on a multi-generational voyage?

For that matter, what about an entirely machine crew, aka a rover/voyager style reconnaissance 'probe' visit? Send the machines that can get there, take readings and report them back. Sure, waiting 44 years for the probe to get there is hard, and the 8.8 year turn-around on communications would be obnoxious, but at such speeds, even within a single lifespan we could build, launch, and get the probe there, and get data back from it.

Of course we don't even have practical technology to get us to those speeds either. Our current tech gets us more like 0.5% the speed of light, so talking about the energy expenditure to get to speeds we can't reach is, necessarily based on our current understanding of physics and our own capabilities.

We're not even a Type 1 civilization on the highly speculative Kardishev scale yet. Our society can barely prioritize building technology that lasts more than a few years because we're obnoxiously obsessed with the lucrative opportunity to charge to replace, repair, and upgrade things. A blender than lasts a lifetime? In this economy?

The idea of humanity being able to collect and harness even 10% of the sun's energy output is almost laughable when you take humans into account. Imagine how much we'd have to change as a society, to consider multi-generational, multi epoch projects on the scale of a Dyson Sphere, or even a Halo style ring.

We are still barely infants. Modern humans haven't even had our first million years. We haven't even been writing things down for more than a few thousand years.

sirhc desantis

Ah so Saint Phil of the Ultimate Sales speaks... :)
There is no Fermi Paradox. Deep space and deep time cover all of that - at least in our monkey perception. Besides, you don't need 'energy'. Huge lumps of mass will bring any point close enough to nip over easily. And as the current thinking involves 'we don't have a clue so lets label all things with dark energy and hope no one notices we have reverted to ectoplasm as an explanation' why not:)
And another thing if all stuff is 'fields' where are they anchored? And referenced to what? After decades of following physics its hilarious these days. Woo Woo Paltrow has nothing on current stuff =^^=

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