Brahe: A Master Observer
Danish astronomer Tycho Brahe's observations of the bright
new star that appeared in the sky of 1572 proved the heavens
were not changeless. His observations of a comet in 1577
proved that comets moved about freely through the realm
of the planets, a discovery that shattered the centuries-old
notion of solid, transparent heavenly spheres.
Indeed, observing was Tycho's passion, and precision was
his obsession. Supported by the king of Denmark, he built
two major observatories and filled them with the finest
instruments, many of which he designed himself. He cataloged
the positions of a thousand stars and tracked the motions
of the Sun, Moon, and planets. The accuracy of his measurements
remained unsurpassed until the invention of the telescope.