No, I’m not mistaken. And my questions were not addressed; in fact, I did not ask any questions.
Have you actually looked at all at the Gemara, and at the Rishonim and Acharonim? The Chachmei Yisrael held that the sun goes above the rakia at night (in Bava Basra there is a machlokes as to whether the sun turns to the side and travels along the northern border of the world, or whether it turns upwards and passes over our heads). The Chachmei HaUmos, on the other hand, said that the sun goes beneath the earth at night (which, as we know today, is correct). Rav Yehudah HaNasi says that the Chachmei HaUmos seem to be correct, because (in his view) rivers steam at night because they are heated by the sun from below.