User blog comment:High King Ithilion/The Ithilion Eleruth Collection/@comment-30079501-20170323185632/@comment-25841881-20170324014650

It wasn't the same as our sun. Also, the alternative creation had the Sun being diminished by the rape of Arien, making that Sun also being Arien's Sun. Arien's Sun was a boat-type thing, which was capable of landing and resting in Valinor, which at that point was still part of the Earth. It's possible for Aurorae to exist, but they were never mentioned and the fundamental mechanics of them are not in place in Ea.