Question

What is Hemisphere?? Explain it in 50 words. ​

Answer 1

: a half of the celestial sphere as divided into two halves by the horizon (see HORIZON sense 1b), the celestial equator, or the ecliptic

b: half of a spherical or roughly spherical body (such as a planet)specifically : the northern or southern half of the earth as divided by the equator (see EQUATOR sense 2) or the eastern or western half as divided by a meridian (see MERIDIAN sense 1a(2))