No not the buddhist I know, it's more that your life will determine your next life, Heaven is a temporary place where those who have done good deeds experience more sensual pleasures for a longer period. Hell is another temporary place where those evil doers experience more physical and mental suffering. It is not believed that such places are permanent. There is no god behind the scene of heaven and hell. Each and every person experiences according to his good and bad kamma.
some of the groups who believe aliens are on earth living with us think we are a giant prison planet and we are the convicts of the universe