Celestial cartography, uranography, astrography or star cartography is the fringe of astronomy and branch of cartography concerned with mapping stars, galaxies, and other astronomical objects on the celestial sphere. Measuring the position and light of charted objects requires a variety of instruments and techniques.

What does Uranography mean?

: the construction of celestial representations (such as maps)

What does ablution mean example?

The definition of ablution is the act of washing or cleaning yourself, especially if you are doing so as part of some religious ritual. Baptism is an example of religious ablution.