Learn more about the phases of the Moon with this useful moon phases diagram. The phases include new moon, waning crescent, last quarter, waning gibbous, full moon, waxing gibbous, first quarter and waxing crescent. For more information...

Galileo Galilei (15 February 1564 - 8 January 1642) was a Tuscan (Italian) physicist, mathematician, astronomer, and philosopher who played a major role in the scientific revolution. His achievements include improvements to the telescope...