Ch-33 The Solar System NS100

. . .about 9 billion years after the Big Bang

The Formation of our Solar System

Past Hypotheses of Solar System Formation sounds from the early universe I grant you that no sounds are given forth, but I affirm . . . that the movements of the planets are modulated according to harmonic proportions. -- Johannes Kepler, 1619

Summary of the Solar System Animation of Inner Planets

Sensational Satellites

Eratosthenes finds the Diameter of the Earth!

Why isn't there an eclipse every month?

The Farside of the Moon. . .

. . .do we know what it looks like?

A Puzzle for you. . .

Winter Clouded with snow The cold winds blow, And shrill on leafless bough The robin with its burning breast Alone sings now.  The rayless sun, Day's journey done, Sheds its last ebbing light On fields in leagues of beauty spread Unearthly white.  Thick draws the dark, And spark by spark, The frost-fires kindle, and soon Over that sea of frozen foam Floats the white moon. Walter de la Mare