A: In general, pearls symbolize innocence, love, perfection and purity. Gold and black pearls are symbolic of wealth and prosperity. Fresh water pearls are thought to help open the heart to receiving love and to encourage self-love. White pearls are symbolic of faith, a pure heart, innocence and a pure mind.
He measured the angular separation of the Sun and the Moon when its phase was first or third quarter to derive the distance between Earth and Sun in terms of the distance between the Earth and the Moon. Eratosthenes (276-194 BC) also measured the distance between Earth and Sun as 804,000,000 stadia.
A lunar distance (LD) is an astronomical measurement of the distance from the Earth to the Moon. The average distance from Earth to the Moon is 384,403 kilometers or 238,857 miles, but the actual distance varies over the course of the orbit of the moon. Depending on the Moon's location in its orbit, it is between 225,623 and 252,088 miles away from Earth. This is about 30 times the diameter of the Earth.