Mark 1:10

And straightway coming up out of the water, he saw the heavens opened, and the Spirit like a dove descending upon him:

Ver. 10. He saw the heavens opened] The visible heavens, so that the Baptist saw something above the stars: so did Stephen; so could Christ when he was upon the earth. It is a just wonder that we can look up to so admirable a height of the starry sky, and that the eye is not tired in the way; some say it is 500 years' journey to it. a Other mathematicians tell us, that if a stone should fall from the eighth sphere, and should pass every day 100 miles, it would be 65 years or more before it would come to the ground.

a Burton on Melancholy.