Funny...
When "heaven" (the heavens) was up just a little higher than a man on horseback could wave a sword-It was "up in the sky."
Then we learned to fly above the earth. It wasn't there.
Then we learned to fly higher than that-above the clouds-It wasn't THERE either.
Then I guess it hadda be out in space. Surely it had to because we hadn't yet been there and didn't think we ever could go there.
Then in 1961, Yuri Gagarin, a Russian cosmonaut went tearing around the earth in near space and actually commented to his superiors on the ground that "there's no god up here."
Now we have satellites and wonderful tools like the Hubble space telescope that allow us to see even further into the space around us-and apparently heaven isn't there, either. Lotsa really cool stuff, but no heaven.
You fundies are slowly running outta places to say it's at.
Personally, I can remember once thinking it was in the back of my van back in the late 80s, but hey....
If ya can't even find it-You have no idea what size it is.