Complex sentence: Moreover, his letter misses out on key facts that include the Church's non-attacking stance on Copernicus when the canon proposed his heliocentric model when in fact a Dominican theologian Tolosani made an unpublished attack on the Copernican system as early as 1544.
Split into simpler sentences: Moreover, his letter misses out on key facts that include the Church's non-attacking stance on Copernicus when the canon proposed his heliocentric model. A Dominican theologian Tolosani made an unpublished attack on the Copernican system as early as 1544.