Luckily, Minecrat is a game were we can suspend disbelief. That means that in Mitch wants to add a landable Jupiter he can. He can invent some stupid reason it's possible.
"You landed on Jupiter? That's impossible! Oh you have the super condenced anti-heat cube in your inventory. It's fine then."
Good thing that's not up to you, huh?
"You landed on Jupiter? That's impossible! Oh you have the super condenced anti-heat cube in your inventory. It's fine then."
I don't want any landable Gas Giants....
Good thing that's not up to you, huh?