Space is that the unbounded 3 dimensional extent within which objects and events have relative position and direction. Geographically area is usually thought of as land and might have a relevance possession usage. area includes the system still as galaxies. The system consists of sun and also the astronomical objects gravitationally sure in orbits of the various objects that orbit round the sun most of the mass is contained in eight comparatively solitary planets whose orbits square measure nearly circular and lies close to a flat disc known as elliptical plane. the four inner planets Mercury, Venus, Earth, Mars square measure known as terrestrial planets square measure primarily composed of rock and metal, the four outer planets the gas giants square measure a lot of huge. the two largest Jupiter and Saturn square measure composed primarily of gas and He. the two outmost Neptune and Uranus square measure composed of ices like water, methane, ammonia and unremarkably referred to as ice giants. the earth of mars additionally contain water whereas Venus is that the hottest planet Jupiter is that the most huge and quickest rotating. area system additionally includes galaxies. A galaxy may be a huge, gravitationally sure system that consists of stars and stellar remnants. area is unfathomably vast, with characteristics that defy our expertise and understanding, the celebrities have mixed-up and astonished humanity for our entire recorded history, and certain before. within the gift, astrophysicists and astronomers square measure sharply finding out the universe in a trial to resolve crucial scientific and logical queries