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gol4 OP t1_ixx747d wrote

Okay but I could at least witness perhaps an extremely large explosion to propel them out of their galaxy.

The next observation would be when they arrive.. Which is sometime in the past?

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Nerull t1_ixx81pe wrote

The light from any such explosion would have arrived before they did and would be long gone by now.

You cannot travel faster than light. It is not possible for an object to travel from Andromeda to Earth faster than light does so.

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gol4 OP t1_ixxb047 wrote

But I just hypothetically saw it..

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daikatana t1_ixxgeuz wrote

You cannot arrive before the light of the explosion, you would have had to travel faster than the speed of light. If you travelled at the speed of light, you would have arrived at the same time the light from the explosion reached here.

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BeverlyMarx t1_ixy3pnz wrote

This is all theoretical/hypothetical, but if they had used a wormhole (going around limitations of speed of light), yes they could arrive before the light showing them entering the wormhole

Or maybe one of these https://en.m.wikipedia.org/wiki/Alcubierre_drive

> Objects cannot accelerate to the speed of light within normal spacetime; instead, the Alcubierre drive shifts space around an object so that the object would arrive at its destination more quickly than light would in normal space without breaking any physical laws.[3]

This theoretical drive requires more energy than is in the universe though (among other problems)

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SimpleIcy4843 t1_ixy7s8a wrote

Not really, people simply do not know what "dark matter" is. P.S. Math, physics, etc. has their measurements all wrong. It is NOT consistent in ANY environment. Everyone is looking to build on wrong older theories. String theory is a perfect example, yet they all are really.

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