HN Explorer

New paper seems to rule out MOND theory of gravity

6 points by seanhunter ↗ HN
Paper by Banik et al here https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stad3393/7342478

Youtube video explaining this vs the previous paper that seemed to support MOND here https://youtu.be/HlNSvrYygRc?si=5EggHc1uAqlpQQ48

3 comments

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mikewarot
Well, Quantized Inertia[1] (a similar non-Newtonian gravity theory) will be flight tested in the next few months with a reactionless thruster, in space.

The launch is currently scheduled for Saturday, barring delays we should know if it was successful in moving a satellite in orbit in a few months.

Personally, I estimate the odds of success at about 50/50. The device has been tested on the ground, but things break. (Or the theory could be wrong)

[1] https://quantizedinertia.com/papers/

AnimalMuppet
1. I would not regard such a theory as being a 50/50 chance, even if I assumed 100% of the spacecraft working.

2. Could you be a bit more specific about what you mean by "reactionless thruster"?

mikewarot
If it works, it'll be using what is essentially a leaky capacitor (two plates very close together) to generate thrust, with no reaction mass being ejected or expended.

I assume that most people would put the odds a few orders of magnitude closer to zero, and most actual physicists would put it at zero.