Tycho Brahe Measures the Sky . ... Credit Copyright: Tycho Brahes Glada Vnner Explanation: Tycho Brahe was the most meticulous astronomical observer of his time. Brahe , who lived between 1546 and 1601, set out to solve the day's most pressing astronomical problem: to determine whether the Earth or the Sun was at the center of the Solar System . ... NASA Web Site Statements, Warnings, and Disclaimers . NASA Official: Jay Norris. ... A service of: LHEA at NASA / GSFC . ...