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.
Galileo, though, was the first person to use a telescope for astronomical purposes after hearing about Lippersheyâs work in 1609. He improved on Lippersheyâs design and using his new telescope in 1610, he discovered the four largest moons of Jupiter (Io, Ganymede, Callisto and Europa) and physical features on the Moon.