It was in the above link, and I think the localised heating was the suggested reason for the pioneer anomalies. This QI if true would explain the EM drive (which is still under considerable study by DARPA) it would also do away with dark matter explanation of outer galaxy rotation which in turn would mean we don't have to search forever for another particle that might not exist.

Which is really the whole point, an alternative theory has been suggested, the only way to test it is with a space test but everyone looks at this experiment and says oh another EM drive, it's not it's an experiment, the possible results could open up genuine new science and all everyone thinks it's a scam or something are chomping at the bit to say 'eternal motion device' or fringe theory, ok it is a bit fringe, but we accept hawking radiation, it may be we have to accept quantised inertia, there could be an absolute smallest amount of inertia (it's super tiny)

But DARPA has thrown some money into the ring and it's worth mentioning it has been shown to produce thrust in line with predictions apparently to the satisfaction of independent testing facility, it's a head scratcher, I don't claim to understand it at all. But I will watch with interest, if proven this really is something new.

But the whole thing weighs about as much as a very poorly sparrow.

And a few decades of feet, many of them Russian, I think re entry would be the kindest thing for the old girl. Not right away of course, but someday not to far in the future she deserves a Viking funeral. Although I would like to see the whole thing preserved if possible, I don't know if an orbit transfer and mothballing could work, maybe a gas station for starships.

Isn't that a bit like asking time team to excavate the main stage at Glastonbury?

I think it's referring to CMOS manufacturing processes isn't it? As in they don't have to sink billions into new fabrication tech rather it's materials science that current processes could adapt into established knowledge base, so like they didn't reinvent the wheel they just made better wheels?

Well I was given a 32" backlit LCD from a budget manufacturer for nothing today because some of the buttons on the remote didn't work. Took 30 seconds to pull it apart and use a disposable spectacle wipe to remove the sticky gunk from the circuit board, so yea free beats better. No way I'm spending second hand motorcycle money on a TV.

Eating disorders disguised as ethical choices.

Still bagged the guy 70 large in reward money from Google, not a bad days work at all. Did I read that right 70 grand???

Dark Eden https://en.m.wikipedia.org/wiki/Dark_Eden_(novel) was a fun read, one of the random ones I've borrowed from the library, it's not that heavy on the sci fi unfortunately it's more a human book about the highly inbred descendants of a crew that crashed on a rogue planet, but the author does a fair job of describing his idea of a frozen planet with pockets of geothermal heat that is channeled through the trunks of giant trees and various life forms most of which are bioluminescent in some way, pretty cool read actually I did enjoy it.

That's the only one I can personally remember reading specifically about rogue planets but Wikipedia has a page im gonna bookmark https://en.m.wikipedia.org/wiki/Category:Rogue_planets_in_fiction

Yes, but once there you could relay information, that information could then be acted on before light could have transmitted it. That's not actually a problem, but if another plus light speed trip took that information to certain places (as described on the Penrose diagram as in violation of causality) then they could use that information to, well I don't actually know, I believe in the speed of light!

It has been in a book or two, but that is no reason to stop now!

I think after the event that sent it apart from it's star it would settle into a very stable state, space is vast, the odds of it coming close enough to another star close enough to benefit from it's heat output would likely be it's death due to gravitational shear.

A sufficiently high amount of radioactive material in a world with a molten core is not impossible, the by-product of radioactive decay is heat. After all a good amount of the Earths heat is still residual from the planets accretion. Or there could be a gravitational influence such as large satellites gravitationally bound, the tidal forces producing heat from friction. And that's leaving aside a technologically advanced civilisation who can split atoms for power. Also an atmosphere could certainly survive even if just trapped below surface.

Regarding radiation, a strong magnetic field from a molten metal core should do the trick!

Or the other main idea also means it has no end but is finite, basically the 3 dimensions of space could curve around, like Pac Man running off the right side of the screen and appearing in the left. Only the curvature is so slight that from our scale we cannot detect it, the cosmic horizon being such an insignificant fraction of the whole we cannot picture the universe being round!

Did you consider how much of the sky that image covers? Hold a grain of rice out at arms length, that much sky and that's generous, every single direction is the same right out to our cosmic horizon, and that is simply an arbitrary distance due to the speed of light and the expansion of the space in between. There is every reason to assume that it just continues forever! Much of the universe, in fact likely most of the universe will forever be invisible from us because the light will never arrive here! The space between the galaxies is expanding, once you get above a certain distance the cumulative expansion exceeds the speed of light! There is so much stuff, so many mysteries.

You just broke causality and that's forbidden! The speed of light is not just a suggestion!

Yep, once we learn a better way of getting places than very large firework's. Some promising current tech are things like nuclear electric, we use ion thrusters now, they are super efficient but low thrust for now. A fusion breakthrough would help a lot. But we could realistically get up to 0.2C (1/8 of light speed) but possibly that would be something like nano probes with light sails on a laser high way in a long row of thousands of individual probes and a signal is relayed back along (see Breakthrough starshot) That would reasonably get us closer up data of surrounding solar systems in a reasonable time.

What about the rogue planets? They can be wondering between solar systems or even galaxies, sometimes at incredible speeds if say they had a narrow escape from a black hole. And should one pass through or even just close enough to our solar system it would make a very handy space ship! If course we would have to be ready to go hop on as it passed, and you don't get to choose where you go.

Right now there could be a civilisation who managed to survive on a planet with no star! Just wondering through space, the planet core slowly cooling providing the bear minimum, but if they are clever enough they could split the atom and live in total comfort, until their version of Putin ruined it (how did this get political?) 🙉

Do you want aliens? Because this is how you get aliens.

Ever since I was a kid I've thought of this kind of thing, just my mind wondering. I even devised a human version for use in Earth! Well it only works at sea! Imagine a lance like a medieval jousting lance that curved taper to a wider conical cross section at the handle end, well turn that vertically and have a skydiver riding this thing like a pogo stick! So I thought that if you can get that curvature right and the whole thing scaled up the tip can hit the surface of the water at full terminal velocity and the whole thing will rapidly reduce velocity as more of the lance enters the water as both the resistance due to friction and floatation will increase from almost nothing (all determined by the curvature and dimensions of the lance) it will take a certain amount of 'commitment' from the skydiver!