Catalogued stars, predicted a planet beyond Uranus as well as the existence of dark stars, investigated Johann Kepler's problem of heliocentricity, and systematized the ...
Friedrich Wilhelm Bessel (Minden, 22 luglio 1784 – Königsberg, 17 marzo 1846) è stato un matematico e astronomo tedesco, sistematizzatore delle funzioni di Bessel ...
German astronomer and mathematician. He was the first person to find the approximate distance to a star by direct methods when he measured the parallax (annual displacement) of the ...