But the other planets are probably absurdly far away. The space happens to be expanding as well, so that distance is also growing rapidly. If FTL travel isn’t possible, nobody will ever visit those worlds, and they can’t visit us. Just travelling at 1c or even 1000c won’t be much help either. The distances sure truly vast.
He likelyhood of this planet being the only place in the universe some complex proteins folded a billion years ago is zero.
But the other planets are probably absurdly far away. The space happens to be expanding as well, so that distance is also growing rapidly. If FTL travel isn’t possible, nobody will ever visit those worlds, and they can’t visit us. Just travelling at 1c or even 1000c won’t be much help either. The distances sure truly vast.