What can these negative-mass-free wormholes be used for?

If the ends of the wormhole can be moved, then maybe terraforming

Let's imagine your explorers have travelled to a new solar system. It's got a type G sun, pretty much identical to our Sun. There may or may not be aliens living on an Earth-like planet in the habitable zone, in fact you aren't sure if there is such a planet there. Out in the distance, at a radius we might call "trans Neptunian"... you've got:

• ice giants

• A Pluto-like planet

• A mostly rocky/metallic planet that's actually very like Earth, but doesn't get enough heat from the Sun at that distance to be habitable.

So...

• You open a large wormhole very near the sun, with it's other end about eight light-minutes away from that rocky planet. Sure, it'll take the light a bit longer to get through the wormhole to Planet Rock than it would if it were going directly, but that's only a short initial delay of less than a day. After that, the planet is getting as much sunlight (& so heat, UV etc.) from the sun as if it were at an Earth-like distance to it. Continuously.

  (You've just beaten the inverse-square law! Well done.)

But there are still problems.

1. The gravitational effect of the Sun is also coming through that wormhole. Or at least, I think it is - people with more knowledge of physics, please comment! It'll change the planet's movements, and you don't want to destabilise the orbits of the other planets in the system. So you maybe open another wormhole first, with something very dense but emitting very little radiation, at the other end. By moving that wormhole, you use the mass of that larger body to tow the transneptunian rocky planet to a safer distance. Then you open the wormhole to the Sun.

   You'll still probably need to make occasional course corrections, nudging the existing planets a bit to keep them in orbit. I think. My knowledge of physics doesn't go far enough. Remember, if there are aliens living in a habitable zone planet, you don't want them to find their planet hurtling out of orbit. Possibly these small adjustments are viable with your future technology, but the wormhole towing trick is the only way you can move a planet over large distances.

2. You need to get oceans established. How long a timescale do you have? You could open another such wormhole, with an opening very close to the ice giant. The Sun's heat then evaporates the gas and begins to melt the icy core. Then you open another wormhole, through which the now liquid water pours - and comes out the other end on Planet Rock.

   If you're in a hurry, and you have a Pluto-like planet, you might be able to melt away the nitrogen ice crust and get at a useful liquid water mantle faster.

3. You don't want a planet that's effectively tidally locked. No problem! You just get that end of the wormhole moving so that it orbits the rocky planet. You probably make it take 24 hours to complete its orbit.

Critique and discussion welcome, especially because I am using this idea in my story.

posted about 4 years ago

Astrid_Redfern‭

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