It's not really a planet. More like a...uh, a place.

[Okay, so he doesn't have a big word for it but no one else explained that either, they just said you couldn't LEAVE and that's not likely to make Pi here feel any more at ease. He doesn't know what would make her feel more at ease, on account of her being a rock...alien...thing.]

Uhh, yeah, so that's snow. You've seen snow, right? It's cold and squishy and don't eat it, seriously. That's bad news bears.