If he ceased to make striking discoveries in celestial mechanics, it was rather their subject-matter than his powers that failed.
There's such a aura here, such a celestial ambience!
C. Baber, who, in 1877-1878, unravelled the geographic mysteries of the western provinces of the Celestial empire.
The armillary sphere survives as useful for teaching, and may be described as a skeleton celestial globe, the series of rings representing the great circles of the heavens, and revolving on an axis within a horizon.
By night Luria's soul ascended to heaven and conversed with celestial teachers who had once been men of renown on earth.