Bessel, Friedrich Wilhelm 1784-1846. Prussian astronomer just who recalculated the orbit of Halley's comet (1804), verified by parallax the exact distance from Earth towards double celebrity 61 Cygni (1838), and developed a class of mathematical functions predicated on their research of planetary perturbation.
German mathematician and astronomer whom made precise measurements of stellar distances and whom predicted the existence on an 8th world (1784-1846)
Definition for "Bessel"
Bessel, Friedrich Wilhelm 1784-1846. Prussian astronomer just who…