• [mass noun] The action of finding one's way by observing the sun, moon, and stars.

    • ‘The three-year expedition from 1804-1806 comprised around 40 men, variously skilled in botany, meteorology, zoology, celestial navigation, Indian sign language, carpentry, gun repair and boat handling.’
    • ‘However, due to lengthy computations and the space needed for large charts, the timeworn system of celestial navigation was ill suited to the airplane cockpit.’
    • ‘Far from being a mere passenger, Hattie kept the ship's weather logs, learned celestial navigation and even handled the vessel on some occasions.’
    • ‘It should be noted, however, that despite what you might read in books and articles, the Indigo Bunting is the only species of bird which has been demonstrated to use celestial navigation.’
    • ‘In our third year at the National Defence Academy, we naval types branched off to learn celestial navigation and knots and splices.’