Post B1sPkIIRo00RDOzdya by hypolite@friendica.mrpetovan.com
(DIR) More posts by hypolite@friendica.mrpetovan.com
(DIR) Post #B1pNHuPqDX6RewuQ88 by clacke@libranet.de
2026-01-01T02:13:55Z
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Looking at the trajectories of interstellar objects we have created, past trajectories of interstellar objects that have visited or are visiting us, and the trajectories of the Sun and nearby stars, what are their past and future interactions?The Overview Effekt: "Where is Voyager Headed? ↤ ↦ Where did 3I/Atlas Come From?"farside.link/invidious/watch?v…youtube.com/watch?v=RuTfNWU4XW…
(DIR) Post #B1pNHvw8YwWyNP1j6m by clacke@libranet.de
2026-01-01T02:55:24Z
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"""Somewhat ironically, I think, the closest encounter of all of these is not with any of the probes, it's with Sol itself; Gliese 710 is currently about 60 lightyears away from Sol, but in 1.3 million years, it will pass within .16 lightyears of Sol, close enough to disturb the Oort Cloud and comets on the edge of our solar system."""
(DIR) Post #B1pNtFpPZM5amdg1tA by clacke@libranet.de
2026-01-01T03:02:47Z
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Listen up, humans of 1.3 Myr in the future, if you're still around, it will be criminally negligent of you if you don't take the opportunity, and don't spend the 100, 1000 or even 10000 years prior to this event on preparation to make the best of this opportunity.Please colonize, or at least visit, or at the very least robotically visit the Gliese 710 system during this time. Even more importantly, make sure Earth is safe from any comet mayhem that may come from this drive-by.#space #SpaceTravel #gliese710
(DIR) Post #B1pPR4Y86rItbSHcGm by clacke@libranet.de
2026-01-01T03:20:14Z
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"Scholz’s star passed within 0.8 ly of our solar system [70 k years ago], tearing out comets from the Kuiper Belt that’ll fall back down on Earth in 2 million years."Yeah ok, humans 3+ M years in the future, please prepare for the fallout from Gliese 710. 😅xcancel.com/ToughSf/status/188…/via dailygalaxy.com/2025/09/scient…
(DIR) Post #B1pQN9XxghovtitpS4 by clacke@libranet.de
2026-01-01T03:30:49Z
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"The sadly amazing thing is NO ONE thinks the obvious.. Scholz star has an ‘oort cloud’ TOO, which envelopes it and follows it, ergo it preceded the star, and its ice comets entered the inner solar system, without any doubt."Oh! Right! So even if it takes time for our local comets to be perturbed, when we have a visitor star even within 1–2 lightyears' distance, our system will already be touched by its aura of ice.Yes, the Oort clouds of the Sun and Proxima Centauri are practically touching at present.xcancel.com/FKNmemecoin/status…
(DIR) Post #B1qFVYhJ9nmPse2Ka8 by hypolite@friendica.mrpetovan.com
2026-01-01T13:03:42Z
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@clacke Ha ha, thinking there will be humans in 1-3 million years from! 🤣
(DIR) Post #B1qTIh2OEj0lL9enBY by clacke@libranet.de
2026-01-01T15:38:11Z
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@hypolite I did throw in "if you're still around", but honestly I think there are pretty much two possibilities:1. We destroy ourselves (and to do that we'll have to destroy most of the planet) in the next 1000 years.2. We stick around for millions of years, as we and our nearest ancestors already have.Of these two, I think possibility (1) is not as easy to achieve as many people think. We can destroy all of our civilization and its physical structures, but as long as there are a few thousand humans left, we'll bounce back. We've passed that bottleneck at least once before. Give those guys 10000 years and they'll have nukes, spaceships and datacenters again.
(DIR) Post #B1qnvfI4fDqwIaqzg0 by hypolite@friendica.mrpetovan.com
2026-01-01T19:28:42Z
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@clacke I agree complete human extinction is not easy, but we currently are on this path. And as we probably cull our own ranks in the future, the progress towards that dreadful end will slow down, but there are a couple considerations of scale that factor in:- Anything to do with nuclear fission may end up releasing catastrophic levels of radiations over large areas for a long time. Civil or military.- So far we've experienced a slow decline in biodiversity, one extinct species at a time, but entire ecosystems might break at once when key elements are finally removed, in a fast domino effect we may not be able to adapt to fast enough.- The entire Earth climate has stayed within a relatively narrow temperature range over the past 450 million years, and that was without human intervention. Now that we have durably altered the climate, the natural fluctuations may fall outside of that narrow range towards uncharted territory that most life on the planet was never prepared for.Said otherwise, I'm not sure there can be a cycle like you describe because we simply don't fully know what the downturn of the cycle looks like in practice. Maybe by the end of the downturn the required conditions for the initial upturn won't be there anymore.
(DIR) Post #B1rtQW6XYqoRiNwvPk by clacke@libranet.de
2026-01-02T08:05:44Z
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@hypolite For one, if fossil fuels are needed to reach the technological complexity where you no longer need fossil fuels, we may have burned our chance, all the easy coal and oil has been dug out.On the other hand, we have piles of refined material everywhere that we can cannibalize in the next cycle, both for raw material and to find inspiration and leapfrog the development ladder.In terms of chemical and nuclear material devastating large areas of land, we got through the ice age.Keystone species though, there might be something there that totally undermines mammal, bird and reptile life and leaves only roaches.But if we do get through this thirteenth millennium of the holocene, I think we must have pretty much figured it out and we're set for millions more.
(DIR) Post #B1sPkIIRo00RDOzdya by hypolite@friendica.mrpetovan.com
2026-01-02T14:07:00Z
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@clacke I agree, but that final "if" is load-bearing.