Vacation destinations usa for Me neux. From Ame de e Guillemin, Le Ciel, notion ?l?mentaire d’Astronomie physique Paris Librairie Hachette et Cie Great Comets Some comets set themselves apart from the majority by virtue of their sheer magniicence their brightness and largeness and/or length seen against the backdrop of a dark sky. Such comets are classified as great comets. There is widespread agreement regarding the attributes that render a comet great. First, a comet may make a close pass by the Sun. Chief among those attaining to greatness primarily because they came close to the Sun are the Kreutz Sungrazers. For example, the sungrazing Great March Comet of see igs? came to within AU of the Sun about , km from the Sun’s surface, traveling so fast km a second that it made its way three-fourths of the way around the Sun in less than hours, and attaining to – to – magnitude. Vacation destinations usa 2016.