[fogdart]

Assuming we could see it. I'm not a physicist but I have read this book series called The Three Body Problem, in which we discover alien structures, but in the fourth dimension.

[Tenoke]

The three body problem is more magical realism than scientific really.

[asimovfan]

thanks for spoiling it! i was meaning to read it.

[l-lousy]

The 4th dimension is used as more of a metaphor or minor plot point. The series has a much more valuable message.

[alexanderdmitri]

Definitely still read it, that's not a spoiler. The implications of the Dark Forest are very pertinent to this sort of search for other life.

[bashinator]

That’s hardly a spoiler

[Tenoke]

I'd definitely consider it one and would've dropped the book if someone had told me just when I started it.