Adam Clarke on 1 Corinthians 15:41

There is one glory of the sun - As if he had said: This may be illustrated by the present appearance of the celestial bodies which belong to our system. The sun has a greater degree of splendor than the moon; the moon than the planets; and the planets than the stars. And even in the fixed stars, one has a greater degree of splendor than another, which may proceed either from their different magnitudes, or from the comparative proximity of some of them to our earth; but from which of these causes, or from what other cause unknown, we cannot tell, as it is impossible to ascertain the distance of any of the fixed stars; even the nearest of them being too remote to afford any sensible parallax, without which their distances cannot be measured. See the concluding observations, (1Cor 15:58 (note), points 1-8)