...and all the way up, if you consider Earth as an island in the lake of the solar system, which is of course an island in the galaxy, which is an island in the local group, etc.
> if you consider Earth as an island in the lake of the solar system
I mean, "if" is doing a lot of work there! Earth is not an island because it's not surrounded by water. Poetically, sure, it's a nice metaphor, but it's only a metaphor.
Earth is not sitting in a body of water. Maybe I'm moving goalposts but c'mon now, this is not what people typically mean by an "island"!
Similarly, my home is not an island even though the air around it contains water vapor. Nor is my home an island because there are some puddles on the street outside.
