bessel, who discovered it, did not hesitate to apply the laws of motion, and to affirm that this visible change of the star's motion pointed to the presence of an unseen companion, which produced upon the motions of Sirius and Procyon just such effects as the visible companions produce in the motions of double stars.
"A Text-Book of Astronomy"
George C. Comstock
The name of bessel stands out conspicuously in this memorable chapter of astronomy.
"The Story of the Heavens"
Robert Stawell Ball
Great interest was excited in the astronomical world by these discoveries, and the Royal Astronomical Society awarded its gold medal to bessel.
"The Story of the Heavens"
Robert Stawell Ball