Only problem with the "near the speed of light" is the how do we get to those speeds? We don't even, currently, know how to get to 0.01c, let alone 0.99c. Plus you'd have to have some way of negating the relativistic particles from ripping into some people (only reasonable one that would actually work might be some sort of magnetic field around the ship, giant lake's worth of water would be too much mass). Alas, these are questions we'll likely come up with answers to at some point, provided we don't kill ourselves.
How? Just brainstorming -- a space station built around a star that functions as a dyson ring for energy. The station would spin at speeds approaching the speed of light, thus produce gravity through centrifugal force. The star's gravity would somewhat counter balance the G force of the rapid spinning. Only at a fraction of the speed of light there would be a noticeable time dilation.
I wasn't. I don't believe in any deities, except for dateline though I think it's rubbish. In fact music is exactly that, precise wavelength patterns that trigger some regions of the brain that produce a sensation of pleasure. Change the brain or ear or the pattern and it will no longer be enjoyable. It's highly subjective matter. As for seeing the world as work of art, I don't see it as a work of art in the sense of being painted by a master painter, I see it as incredible and 'work of art' in the sense that it is remarkable how four fundamental forces and 16 particles can shape all this. I enjoy and I linger in that feeling. It matters to me not that the feeling is caused by electric currents in my brain. That is the mechanism, it doesn't make a muscle car "less amazing" when you know how the engine works. On the contrary, you better appreciate the details and better understand the complexity involved. Whenever you are contempt with not trying to learn more about something, you're missing a chance at elevating your mind. Knowledge is power. Understanding our surroundings is what makes us able to better exist in it, regardless of viewpoint. At speed of light time stops. If you managed to exceed it, time should go backwards. It makes no sense and that partly why science doesn't reach into black holes. It makes no sense.
We do know how to get past 0.01c. We just need nuclear power and massive electric drives. The increased density of stored energy allows high velocities. I think current limits were around 0.3c or so, though it's leaps and bounds to get from 0.3c to say, 0.5c. Best way to get near c is to go to black hole
If the station spin speed (angular velocity) approaches c the station will explode apart. There's no material to keep it together.
Honestly I think that problem will be easier to solve then many of the other things mentioned. We need a way to protect against the radiation, space debris and other misc stuff in space. We need a power source that can last many years and output an incredible amount of power, and we need some sort of propulsion. I think the first step to this is something we were talking about last night, we need a orbital manufacturing facility. We need to be able to make ships in space so we do not have to deal with escape and re-entry. We can focus on travel.
Time dilation isn't really in the same ballpark to me, since the person traveling experiences none of the time that passes for outside observers. I classify it as more of a type of time travel
One and two are most likely to happen with the last one sounding like something out of warhammer 40k. I'll take option 1 because no need to go through the whole aging process again and option 1 can also lead to other genetic engineering enhancements.
Read house of Suns by Alastair Reynolds and you will see why I think it is. There is more to it then just the travel, but it is the travel that allows for the elongation of their lives when compared to the universe around them.
Well we do have artificial hearts and a device that mimics kidneys. As long as we can mimic all the necessary organs it isn't a 'biggie' to remove head. Soviets removed the head of a dog and kept it alive for some time circa 1940. Spoiler: NSFW (dog head separated with tubes attached to major veins and air duct)
Yea, it really works out best if the detached head is capable of accessing, say, house or ship systems, controlling a range of vehicles and surrogate robots etc. and living in a virtual reality as opposed to a pointless existence staring out of a glass jar. Also, the idea that you could mount your head on a vehicle, ship or robot body with full life support capacity is exciting. Needless to say nothing inherently prohibits a fully robotic body from being fully equipped with all the familiar senses as well as some additional ones - with the notable distinction that the senses such as pain can have limits and be shut down as needed etc. I can imagine a day when it would be difficult to identify whether a 'person' sitting next to you has organic brains or an AI guiding the robotic body which gives a perfect impression of being fully organic. Think of Daneel Olivaw from Asimov's Robots-series, a robot that passes fully for a human and even can eat (provided it empties the food container mimicking stomach at some point) in order to provide dinner company. I guess one of the big crossroads will be whether we will in future have organic or cybernetic bodies. I guess a little of both and mixes of both depending on what attributes you're trying to max and what you can afford.
For the most part that is true. I was talking to Haki about this last night. The reasons I would want to be able to live longer would be to see what happens in the future, to see what developments in technology and medicine and other amazing things that we create. That would allow me to do that. That is why I consider it a form of immortality. But I can see where most people may not.
Why keep the head? All you need is the brain. Hook it up to life support and a mobile platform and go.
The problem is still with aging. Transferring a old persons brain into a younger body would just end up with them having some sort of Benjamin buttons disease because the brain would still think it is old. Only way would be to change the perception of age in the cells or how aging influences them by genetic manipulation of the DNA which dictates how your body does what it does.