Hacker News Comments on
How to Move the Sun: Stellar Engines
Kurzgesagt – In a Nutshell
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All the comments and stories posted to Hacker News that reference this video.There are some sources that discuss the idea here:https://sites.google.com/view/sources-stellar-engines https://www.youtube.com/watch?v=v3y8AIEX_dU
⬐ voldacarthe Caplan engine is quite nice! Assuming there is no need to move the solar system, it seems advantageous to dispense with the dyson sphere and just use the mechanism described to siphon out mass from the sun to directly power fusion reactors. Even a perfect dyson sphere captures <1% of the energy released by the sun's nuclear fusion.
Moving the entire solar system is my favorite solution so far:
The Caplan Thruster of this video: https://youtu.be/v3y8AIEX_dU
I wouldn't expect an exhaust plume passing through a wormhole to move the wormhole itself (or the heavily curved "portals" at its ends) any more than a plume would move "flat"/"normal" spacetime.Separately, Kurzgesagt did a video on stellar engines (which can be much less exotic than wormholes); sounds like what you're describing: https://youtu.be/v3y8AIEX_dU
Out of every video Kurzgesagt has ever produced, my favorite is this one, which talks about a stellar engine that a type Ⅱ civilization could be using: https://www.youtube.com/watch?v=v3y8AIEX_dU
And how do we move our spaceship?I was amazed to know that theoretically we can move our solar system.
Kurzgesagt video on this: https://youtu.be/v3y8AIEX_dU
⬐ DrAwdeOccarimThanks for sharing. Reminds me of the Wet Hot American Summer line about how we are all passengers on starship earth!
Extracts:The machine would use a Dyson sphere to collect mass, separate out helium to push the sun, and fire hydrogen at the sun to avoid crashing into the sun.
It could push the Sun at a speed of about 50 light years per one million years.
Matthew Caplan from Illinois State University designed the machine at the behest of Munich-based YouTube channel Kurzgesagt. The channel then created a stunning video to illustrate the device, which it dubbed the Caplan Thruster, and a paper Caplan wrote describing the machine has also been published in the journal Acta Astronautica.
Video links: Kaplan thruster: https://youtu.be/v3y8AIEX_dU
Dyson sphere: https://youtu.be/pP44EPBMb8A