[craftyguy]

Well, by that loose definition, there is absolutely nothing that is not 'natural.'

[Spakman]

Yeah, I agree with that!

[popcorncolonel]

"Natural" is defined as: existing in or caused by nature; not made or caused by humankind.

So by definition, there are things that are natural, such as other galaxies, and all things a million years ago.

[aorloff]

Things that are natural : all galaxies, including ours.