Harbinger2001

Harbinger2001 t1_jab22h7 wrote

Astronomy is very ancient. Certainly older than civilization itself. They didn’t know anything about the Earth orbiting the sun, but they did notice a cycle of the sun tracing a lower to higher path in the sky over the course of a year. It is trivial to set up a line of stones to mark when the sun rises at its lowest and highest points and that gives a way to detect the winter and summer solstices.

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Harbinger2001 t1_j9n9epa wrote

At some point the realization will dawn that it’s not going to be the breakthrough technology and funding will dry up. A few researchers will continue to putter on with a much reduced budget at a much slower pace. And nothing will still come of it until a fundamentally different engineering approach is found.

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Harbinger2001 t1_j9keyeq wrote

Putin was facing a west-friendly Ukraine controlling their southern pipeline and bringing their own LNG production online. The longer he waited the worse it would get for Russia. Trump being the first incumbent to lose in a long time really hurt his plans. In the end he decided the damage done to western solidarity was more permanent than it turned out to be.

The lesson is - don’t fuck with the US’s geopolitical and economic interests.

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Harbinger2001 t1_j9ke57s wrote

In the long term, it’s the right decision. Nuclear was the right option to get off coal/LNG/oil 20-30 years ago. But now the right option is renewables. They are cheaper than nuclear and can come online far faster. Ironically, the oil and gas industry is pushing for nuclear over renewables because it will buy them more time to extract profits.

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Harbinger2001 t1_j6k70oz wrote

It’s a bit more well known than that. There is a maximum speed at which anything in the Universe can travel based on the constraints of General Relativity. Things with no mass must travel that speed. Anything with mass is slower. So the only way something could be faster, is if it had negative mass, which does not exist.

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Harbinger2001 t1_j6ai2gv wrote

The Sun is heating up. In 1 billion years the Earth will no longer be in the Goldielocks zone. So we probably have about 500 million years before it becomes a real issue for humans. Hopefully by then we should be able to either move the Earth as the zone moves, or build space habitats.

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Harbinger2001 t1_iy97gzl wrote

Fewer than 600 people have been to space. Colonization requires a whole new level of heavy lift capability and a destination worth going to. We are going to have nothing but government funded temporary staffed outposts for the forceable future. For people to permanently move, there needs to be a reason for them to go.

As for the resources, the issue it you have to have a customer for them. The only customers are on Earth and no space-based ore extraction can compete on price. On the flip-side, no Earth based extraction can compete for space construction, but that market will be minuscule in comparison. So it can be profitable- but not if we’re talking ‘benefit to Earth’

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Harbinger2001 t1_iy8u9g6 wrote

Colonizing space requires a compelling reason for the colonists to endure the hardships required. Since the resources can’t be profitably repatriated to benefit Earth, there must be some other reason found.

And just because Earth still has vast resources doesn’t make it ‘post-scarcity’ which requires advances in power generation, automation and social structures that have nothing to do with resource availability.

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