A Popular History of Astronomy During the Nineteenth Century Fourth Edition
CHAPTER II
PROGRESS OF SIDEREAL ASTRONOMY
Exact Astronomy in Germany--Career of Bessel--His _Fundamenta Astronomiae_--Career of Fraunhofer--Parallaxes of Fixed Stars--Translation of the Solar System--Astronomy of the Invisible--Struve's Researches in Double Stars--Sir John Herschel's Exploration of the Heavens--Fifty Years' Progress 27