<P> The convention of measuring celestial longitude within individual signs was still being used in the mid-19th century, but modern astronomy now numbers degrees of celestial longitude from 0 ° to 360 °, rather than 0 ° to 30 ° within each sign . </P> <P> The use of the zodiac as a means to determine astronomical measurement remained the main method for defining celestial positions by Western astronomers until the Renaissance, at which time preference moved to the equatorial coordinate system, which measures astronomical positions by right ascension and declination rather than the ecliptic - based definitions of celestial longitude and celestial latitude . </P> <P> The word "zodiac" is also used in reference to the zodiacal cloud of dust grains that move among the planets, and the zodiacal light that originates from their scattering of sunlight . </P> <P> In Unicode, the symbols of zodiac signs are encoded in block "Miscellaneous Symbols": </P>

What is the meaning of zodiac sign in hindi