[qaq]

Why do they have to travel to earth ? A robotic probe can travel X thousand years with no need for new physics. Also there are life forms on earth that basically live forever. Also pretending that a theory that we invented a 100 years ago that is not even fully consistent is some hard limitation on some advanced civ is pretty crazy. Is it more believable that some entity on earth has discovered new physics and kept it secret vs some advanced extraterrestrial civ is more developed than we are ?

[RandomLensman]

Kind of back to my point: You can, of course, invent any weird hypothetical, but there is no justification to consider it in any hypothesis absent any need for it.

[qaq]

There are not many possible explanations this is either earth tech e.g. someone discovered new physics and kept it very secret and has this tech (but for some reason decided to flash it) or it's not earth tech.

[RandomLensman]

Or it isn't any tech but I mix of sensor glitches, misperceptions etc. - no need to go for far out explanations.

[qaq]

Yep multiple pilots, IR targeting system, regular video camera and multiple radars all glitched for multiple minutes in a consistent manner is very high probability event

[RandomLensman]

Vastly higher probability than new physics, extraterrestrials, or unknown advanced civilizations on earth. (Setting aside that not everything needs to glitch, but things could combine with misinterpretations etc.)