Original sentence: In only a few years of work — by 1916 he had died from a chronic illness — he had made fundamental contributions in astrophysics and to General Relativity Theory.Only some weeks after publication by Einstein of the theory, Schwarzschild found the first solution of the Einstein equations, which is now named after him as the "Schwarzschild solution" and which is of fundamental importance for the theory of black holes.The construction work started in 1876, and the main building of the observatory and its equipment were finished in the autumn of 1879.The site of the observatory was chosen on a hill south of Potsdam, the Telegrafenberg, on which had been, from 1832 to 1848, a relay station of the telegraph for transmission of military information from Berlin to Koblenz.Though at that time it was not yet possible to measure the gravitational redshift, important developments in solar and plasma physics were started here and the architect, Erich Mendelsohn, created with this peculiarly expressionistic tower a unique scientific building
Edited sentence: In only a few years of work (by 1916 he had died from a chronic illness) he had made fundamental contributions in astrophysics and to General Relativity Theory.Only a few weeks after the theory's publication by Einstein, Schwarzschild found the first solution of the Einstein equations, which is now named after him as the "Schwarzschild solution" and which is of fundamental importance for the theory of black holes.The construction work started in 1876; the main observatory building and its equipment were finished in the autumn of 1879.The site of the observatory was chosen on a hill south of Potsdam, the Telegrafenberg, on which had been, from 1832 to 1848, a relay station of the military telegraph from Berlin to Koblenz.Though at that time it was not yet technically possible to measure the gravitational redshift, important developments in solar and plasma physics were started here and the architect, Erich Mendelsohn, created with this peculiarly expressionistic tower a unique scientific building