Dark energy (apparently.) Which is the stuff that's accelerating the expansion of the universe. There is less of it in regions where there's no matter (its a kinda anti-gravity thing) so the photons travelling through the void do not gain as much energy as the photons that travelled through matter infested space.
That's how my head got round it, anyway. Although the site mentioned photons loosing rather than failing to gain energy.
Vague handwaving here... but I seem to recall a statement Elsewhere that you could build an elevator out of steel. You would neeed an awful lot of it... and it would be shaped more like an inverted pyramid than a ribbon or piece of string, but it would be strong enough to support itself, and its cargo.
What I want is a way to invest in these speculative projects. I don't want to buy a mug. I don't want to give them a paypal donation. I want to invest a couple of hundred bucks I can afford to loose just to see what happens. It could turn into my retirement fund.
OK. We know that F = G Mm/r^2 So, if the Mass is five times bigger... and the radius is twice that of earth, the force will be 5/2^2 = 1.25G
I don't think that we are able to accurately measure the size of the planet, but the site above quoted 1.5 times earth's radius. That would give us 5/1.5^2 = 2.22G
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Dark energy (apparently.) Which is the stuff that's accelerating the expansion of the universe. There is less of it in regions where there's no matter (its a kinda anti-gravity thing) so the photons travelling through the void do not gain as much energy as the photons that travelled through matter infested space. That's how my head got round it, anyway. Although the site mentioned photons loosing rather than failing to gain energy.
Vague handwaving here... but I seem to recall a statement Elsewhere that you could build an elevator out of steel. You would neeed an awful lot of it... and it would be shaped more like an inverted pyramid than a ribbon or piece of string, but it would be strong enough to support itself, and its cargo. What I want is a way to invest in these speculative projects. I don't want to buy a mug. I don't want to give them a paypal donation. I want to invest a couple of hundred bucks I can afford to loose just to see what happens. It could turn into my retirement fund.
Gravity...
OK. We know that F = G Mm/r^2
So, if the Mass is five times bigger... and the radius is twice that of earth, the force will be 5/2^2 = 1.25G
I don't think that we are able to accurately measure the size of the planet, but the site above quoted 1.5 times earth's radius. That would give us 5/1.5^2 = 2.22G
Plug your own numbers in and take your choice
Windows.