In Infinite Crisis #6, Superman and Kal-L carry Superboy-Prime through Rao to remove his powers, which enables his defeat. In the same issue, Krypton's sun is called Eldirao - (El being the Kryptonian word for "Star"). DC comics writer Kurt Busiek, who coined the name, said, "See, I always interpreted "EL" to be "Star". Kal-El means "Starchild" but it might be more directly 'Child of the Star' by my reckoning. And that would make Eldirao "Star of Rao" or something similar."
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