Hacker Newsnew | past | comments | ask | show | jobs | submitlogin

The Alcubierre drive “beats” the speed of light, for the effects described 0.7-0.9c are more than good enough (if slightly unpractical).

We can’t do that either for now, but is way easier on the feasibility scale.



> The Alcubierre drive “beats” the speed of light

The Alcubierre drive is only a thought experiment that requires "exotic matter" (aka fairy dust) to work.


Papers have been published that have found ways to create warp drives without the need for exotic matter: https://arxiv.org/pdf/2006.07125.pdf


I know, I was making reference to this

> They are only theoretically possible if you allow for negative mass and energy--not an engineering problem so much as a "need to find exotic matter"

Basically people ran the EFE "backwards" to see what matter distribution makes the wanted curvature. You get either negative mass-energy or the bubble doesn't travel ftl iirc.




Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: