General Discussion
In reply to the discussion: The Navy Says Those UFO Videos Are Real [View all]caraher
(6,352 posts)First, I'm just curious - can you give me a source for the story that it was once believed (and by whom) that 1 g was the fastest attainable acceleration? I do know that there was some lore in the early 19th century skeptical of the ability of humans to withstand speeds of travel we now view as quite modest, but even that was based less on physics than bad ideas about physiology.
I do think there's a lot of room for hitherto unknown forces to exist. I'm not aware of any anomalies in the orbits of Martian moons but the fact that galactic rotational velocities don't match visible matter well is the chief spur for ideas about "dark matter," and it's quite reasonable to imagine that a better explanation could lie in either a modified theory of gravity or some yet-undiscovered interaction(s).
BUT... it simply is not true that Moostache's argument "relies on energy manufactured within the craft." It is basic special relativity and applies whether or not the energy sources reside within the body in motion. Indeed, this effect governs every accelerator on the planet, and the subatomic particles being accelerated do so thanks to energy sources that lie outside them. And they never exceed the speed of light.
I can't evaluate any of the dissident theories you allude to, nor would I likely find it worth my time to do so. But I can evaluate your characterization of the present understanding of physics, and that characterization is incorrect.