The closest nearby galaxy is 3.5 light years away so it would have been an intergalactic mother ship possible of moving at speeds of over 186000 km/s or using even more advanced tech to get to Earth. The thing is though, that technology is so beyond humanities grasp, if a species had that much power, they'd only come here to conquer it or not at all. We are primitive and stupid humans related to monkeys for the most part.
To put it in perspective, with current technology it's about 8 months to take a rocket to Mars. To get to the closest nearby galaxy it would take about 1500 years.
The closest nearby galaxy is 3.5 light years away
The nearest galaxy is 25,000 light years away. The nearest star other than our sun is Proxima Centauri that is 4.24 light years away.
But doesn't it have planets orbiting it since stars are sun's?
There's probably at least 2. Our current way to detect exoplanets is fucking laughable, though. We just look for a dip in brightness when the planet passes the sun. All it takes is the wrong angle and we would miss tons of objects in distant galxies or solar systems.
We can't even find the 9th planet in our solar system quite yet. They believe it circles the sun once every 20,000 years. It's very, very far. A 9th planet would explain some orbital abnormalities in one of the asteroid belts though.
A solar system is the planets gravitating around a star. A galaxy is millions or billions of solar systems held together by some type of gravitational pull. I think you mixed the two up
They're inter dimensional . distance doesn't matter
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