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a raft sailing through space with plenty of provisions for everybody....Spaceship Earth remains a compelling metaphor for our collective reality. Unfortunately, our ship looks as if it may have been made by an inter-galactic branch of Boeing. Until I consulted what Tony Abbott might have called the suppository of all wisdom – Wikipedia – I hadn’t realised quite how long the idea of Spaceship Earth had been around. I thought it had been dreamed up by drug addled hippies during the Summer of Love, but it has some longstanding and serious champions, too. Spaceship Earth is experiencing turbulence By Mark Beeson George Orwell, for example, captured the idea this way: The world is a raft sailing through space with, potentially, plenty of provisions for everybody; the idea that we must all cooperate and see to it that everyone does his fair share of the work and gets his fair share of the provisions seems so blatantly obvious that one would say that no one could possibly fail to accept it unless he had some corrupt motive for clinging to the present system. Turns out that there is no shortage of people ‘clinging to the present system’, and not just because they’re corrupt and have a vested interest in preserving the dysfunctional current order either. On the contrary, many people simply cannot conceive of any other way of organising the ship, despite the fact that the crew is fighting among themselves, and the accommodation for those in the lower decks is becoming completely uninhabitable. To be fair, some of the passengers have experimented with an array of different forms of organisation in an effort to inject some stability, legitimacy and fairness into life on board. But even democratic forms of governance, widely perceived to be the most desirable, seem incapable of dealing with some our most fundamental collective action problems, or addressing the concerns of those in steerage. Wealthy passengers still call the shots and simply don’t seem to understand or care about the plight of their impoverished counterparts. And yet it’s not that difficult to come up with a list of reforms that might help to put us on a more sustainable even keel:
It’s hard to know which of these morally desirable, potentially achievable goals is the least likely to be taken seriously, let alone realised. The hippies may have been good at consciousness raising, but they weren’t famous for their practicality, unfortunately; although levitating the Pentagon still has its attractions. Yet given that the ship really does seem to be falling apart, doubts about its carrying capacity, and a conspicuous absence of lifeboats – despite the fantasies of the self-aggrandising/obsessed tech bros – really ought to be uppermost in our collective consciousness. That they aren’t tells us much about the inadequacy of the ship’s officer class. Thoughtful leaders with an understanding of the universal nature of our collective problems and any real concern about the future are depressingly thin on the ground. Australia illustrates the problem. As the old joke has it, no matter who you vote for a politician gets elected. Consequently, we end up with one uninspiring, unimaginative, under-qualified duffer after another, no matter which political party may be in power. ‘But we have to be realistic’ is the usual justification for ludicrously expensive and pointless initiatives like AUKUS, or permitting yet more fossil fuel projects that we absolutely know will make the existential challenge of keeping the ship afloat all the more difficult – even for those of us with tickets for self-contained luxury cabins like Australia. Part of the problem is that we denizens of the upper decks can’t imagine that life won’t continue as it is, or that we might have an obligation to help those less fortunate than ourselves. The Soviet Union of the 1960s may not be the most obvious place to look for inspiration in this context, but the sunlit Brezhnevian uplands may be the best we can collectively hope for – and something that remains beyond the wildest dreams of our fellow passengers in Haiti, Sudan, the DRC… True, the USSR was a bit dull, but a spot of dullness may be just what the world needs at this historical juncture. Let’s not forget that many of our fellow crew members have never even experienced peace or personal security, and the way things are going it’s hard to imagine that they ever will. Significantly lowered collective expectations might be something we need to get used to. If we don’t manage it voluntarily, the environment is likely to do it for us before too long. Things are already getting a bit bumpy on Spaceship Earth. It would help if we knew where we were supposed to be going, of course, or whether anyone actually has a map. Rather than voiding out on the inflight entertainment, perhaps we should mutiny, or at least complain to the cabin staff. Still, look on the bright side: one of the unexpected advantages of being an older passenger is that I probably won’t have to witness it crash and burn. https://johnmenadue.com/spaceship-earth-is-experiencing-turbulence/
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lucky planet.....
Can Lucky Planets Get a Second Chance at Life?
Worlds around red giant stars—and others that don’t orbit any star at all—hint at an unexpected diversity of possibilities for planets and life in the universe
BY CONOR FEEHLY
For decades, astronomers have endeavored to forecast with confidence the fate of planetary systems, including our own, throughout the cosmos. And these experts’ predictions have one central principle: to confidently guess what will eventually befall a planet, you have to know the size of its star.
Tiny stars don’t really burn out but rather fade away as they shine dimly for hundreds of billions or even trillions of years, likely keeping their planetary companions in tow. Massive stars go out with a bang, expiring as a supernovathat leaves behind a neutron star or black hole. Such events tend to be cataclysmic for planetary systems. And stars of middling mass, like our own, expand into a red giant, engulfing or scorching their planets and then dissipating to become a slow-cooling stellar ember called a white dwarf.
This dismal fate is expected to befall our sun in some five billion years, setting what has been considered the last-gasp expiration date for life on Earth and perhaps throughout the solar system.
But insights from fresh studies of dying stars and doomed worlds elsewhere in the Milky Way challenge this consensus. Increasingly, it seems that the eventual fates of planetary systems, ours included, are not wholly written in the stars.
Specifically, two new findings—the discovery of a giant planet closely orbiting around a red giant star and the identification and estimation of the number of so-called rogue planets adrift in our galaxy—have highlighted that there are many more nuanced scenarios to consider. Planets can survive the ruin of their star, and the vast majority of planetary systems shed numerous worlds throughout their history.
THE PLANET THAT SHOULDN’T EXISTWhen our sun eventually enters its red giant phase, its radius will likely extend well beyond Earth’s present-day orbit. Even if our planet and the solar system’s other inner rocky worlds escape engulfment, the sun’s swelling will probably still spell their end because of the scorching temperatures they will experience. For the former scenario, astronomers have been seeing signs of this demise in the atmospheres of white dwarfs: researchers have found such stars littered with the remnants of dead planets they likely swallowed.
In fact, astronomers believed the fate of any planet orbiting a star within its red giant radius was likely sealed. That was until the discovery of the planet 8 Ursae Minoris b (8 UMi b), also known as Halla (after the South Korean mountain Hallasan and in honor of the South Korean astronomers who initially identified it in 2015).
“We used to think that planets just couldn't survive around stars that become red giants—but this system provides a loophole,” explains Malena Rice, an assistant professor of astrophysics at Yale University, who co-authored new research on Halla postulating how it improbably survived.
Halla was discovered by the wobbling its orbital tugging induced on its red giant home star, 8 Ursae Minoris (8 UMi). Track the period of that wobble over time, and you can discern the length of a planet’s year and its distance from its star. Such scrutiny showed that Halla orbits a mere 75 million kilometers from 8 UMi—that is, just half the distance between Earth and the sun. But standard modeling of 8 UMi’s red giant phase suggested that the star’s puffy, hot stellar atmosphere should have expanded about 30 million km farther out than that at its swollen peak. That is, Halla appeared to be a planet that shouldn’t exist. It should’ve been consumed and obliterated. Instead it had somehow escaped.
https://www.scientificamerican.com/article/can-lucky-planets-get-a-second-chance-at-life/
WE NEED TO CARE FOR OUR OWN PLANET BETTER THAN WE HAVE BEEN DOING....
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