What about a reversal gate, when an object passes through it, one of these happens:
- It becomes antimatter
- It becomes negative mass (instantly explodes)
- It becomes its mirror image
- Time reverses inside it (like the reverse all velocities button in universe sandbox)
Here is an unrelated idea. What about a weapon to turn a star into a black hole from afar?
Problem: How to make a black hole
Solution: Build a particle accelerator and collide particles to create micro black holes
Problem: How to send the black hole
Solution: Put the particle accelerator in space. The particles collide at an angle (like a letter Y) and exit the machine, the space is already a vacuum so no problem at having an open exit
Problem: The black holes decay at an instant
Solution: But they move at relativistic speeds so that lasts longer. Also place matter on the trajectory of the black hole so it grows as it goes
Problem: Even if the black holes reach the target star, there is no stopping mechanism, it would go right through the star and keep moving even after that
Solution: Send not one, but three black holes orbiting each other. The orbit is not stable,[1] so eventually one of the black holes will be ejected and two will keep orbiting each other. Send them so that the ejected black hole will be ejected back to the senders direction and stay stationary with respect to the star, consuming it.
Question: The implications for the fermi paradox
Answer: When the arecibo message reaches its destination 25.000 years in the future, the aliens there will send us black holes to turn our star and planets into black holes so that we wouldn’t have resources to resist their invasion fleet.
Problem: But this is an overpowered weapon. What if two aliens have a war and every star in the galaxy gets turned into a black hole?
Solution: There is no solution
Question: The requirements for building this weapon
Answer: Building a particle accelerator in space, aiming at a star and not missing it, solving the three body problem to send the black holes in the correct orbit around each other
Question: How much does any of this makes sense
Answer: I have no idea. You, dear reader, should give the feedback
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there is no easy solution to the three body problem ↩︎