Star of Earendil and the star in FOTR

[Nils]

From Myths Transformed, section I

It is at any rate clear, for he stated it unambiguously enought, that he had come to believe that the art of the 'Sub-creator' cannot, or should not attempt to, extend to the 'mythical' revelation of a conception of the shape of the earth and the origin of the lights of heaven that runs counter to the known physcial truths of his own days: 'You cannot do this any more'. And this opinion is rendered more complex and difficult of dission by the rise in importance of the Eldarin 'loremasters' of Aman, hwose intellectual attainments and knowledge must preclude any idea that a 'false' astronomy could have prevailed among them. It seems to me that he was devising- from within it - a fearful weapon against his own creation.

In this brief text he wrote scornfully of 'the astronomically absurd business of the making of the Sun and Moon'.

I was refering to Tolkien's later thoughts on creation.