Galle confirmed the existence of Neptune based on independent calculations done by Le Verrier . Top B Bailey's Beads are bright spots of light that appear around the rim of the solar disk just before an eclipse. The spots are roughly the same size, and look like a string of pearls. Top C caldera crater formed by an explosion or collapse of a volcanic vent. The Ptolemaic view of the universe was the prevailing theory for over 1000 years.
Top E eclipse The hiding or blocking of one celestial object from another.
A solar eclipse occurs when the moon comes between the Sun and the observer. This happens when the shadow cone of the Moon touches the surface of the Earth, and is observable by anyone within this shadow zone. The orbits of the planets are ellipses, not circles. This was first discovered by Johannes Kepler based on the careful observations by Tycho Brahe. To change a number in exponential notation into one that makes sense, all you have to do is move the decimal point the last number of places to the right.