Researcher suggests that gravity can exist without mass, mitigating the need for hypothetical dark matter

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Researcher suggests that gravity can exist without mass, mitigating the need for hypothetical dark matter

https://phys.org/news/2024-06-gravity-mass-mitigating-hypothetical-dark.html

[TrekMD]

OK, interesting idea.  What does this mean then to FTL travel?  If mass is not needed for gravity, will accelerating to near light-speed then not require infinite mass?

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12 hours ago, TrekMD said:

OK, interesting idea.  What does this mean then to FTL travel?  If mass is not needed for gravity, will accelerating to near light-speed then not require infinite mass?

I know, I can't get my head around it.  Even if possible and you had the energy to get to 99.9999999999 % of C, the ships inverse tau would be so huge that the human race, the earth and solar system and possibly our entire galaxy would be long dead and gone, so what would be the point?  If you subscribe to the ever expanding universe theory, there would not be much of anything left except darkness and dust.  Depressing thought.

I much prefer the warp concept, but the mechanics, technology and power requirements are all out of reach, sort of like the holy grail of sustained fusion reactors.

[TrekMD]

11 hours ago, - Ω - said:

I much prefer the warp concept, but the mechanics, technology and power requirements are all out of reach, sort of like the holy grail of sustained fusion reactors.

At least warp is theoretically possible!