... The Moon and All the Crashes . ... Dad assures himself as he over-anxiously supervises the two young boys' efforts to center a bright, first quarter Moon, in the finder. ... Comet Hale-Bopp Fades . ... The Sun Erupts . ... Tycho Brahe Measures the Sky . ... 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. ... Mercury's old surface is heavily cratered like many moons....