Q&A: How would aliens travel from planet to planet?

How would aliens travel from planet to planet?
I’m writing a story and it involves aliens and I don’t want it to be too far fetched.

And what would be the most scientifically believable way of aliens traveling to earth from galaxies away?

Answer by Dazzle
Well, you can say that the aliens hopped onto their hi-tech ship and zoomed through galaxies and finally reached Earth. Then you could say that they invaded the Earth. They had weapons that could make you turn into one of them. And then you’d say that they had to do some math to calculate how turn you into one by your size, and that’s all I’m gonna say.

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