group, grouping - any number of entities (members) considered as a unit

people - (plural) any group of human beings (men or women or children) collectively; "old people"; "there were at least 200 people in the audience"

natural object - an object occurring naturally; not made by man

extragalactic nebula, galaxy - (astronomy) a collection of star systems; any of the billions of systems each having many stars and nebulae and dust; "`extragalactic nebula' is a former name for `galaxy'"

celestial body, heavenly body - natural objects visible in the sky

closed universe - (cosmology) a universe in which there is sufficient matter to halt the expansion that began with the big bang and to cause the universe to collapse again; the visible matter is only 10 percent of the matter required for closure but there may be large amounts of dark matter

estraterrestrial body, extraterrestrial object - a natural object existing outside the earth and outside the earth's atmosphere

natural order - the physical universe considered as an orderly system subject to natural (not human or supernatural) laws

nature - the natural physical world including plants and animals and landscapes etc.; "they tried to preserve nature as they found it"

real life, real world - the practical world as opposed to the academic world; "a good consultant must have a lot of experience in the real world"

experience - the content of direct observation or participation in an event; "he had a religious experience"; "he recalled the experience vividly"

class, social class, socio-economic class - people having the same social or economic status; "the working class"; "an emerging professional class"

academe, academia - the academic world

Grub Street - the world of literary hacks

atmosphere, air - the mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere"; "it was exposed to the air"

hemisphere - half of the terrestrial globe

Van Allen belt - a belt of charged particles (resulting from cosmic rays) above the Earth trapped by the Earth's magnetic field

hydrosphere - the watery layer of the earth's surface; includes water vapor

dry land, ground, solid ground, terra firma, land, earth - the solid part of the earth's surface; "the plane turned away from the sea and moved back over land"; "the earth shook for several minutes"; "he dropped the logs on the ground"

geosphere, lithosphere - the solid part of the earth consisting of the crust and outer mantle

sky - the atmosphere and outer space as viewed from the earth

solar system - the sun with the celestial bodies that revolve around it in its gravitational field

terrestrial planet - a planet having a compact rocky surface like the Earth's; the four innermost planets in the solar system

concern - something that interests you because it is important or affects you; "the safety of the ship is the captain's concern"

piece, part - a portion of a natural object; "they analyzed the river into three parts"; "he needed a piece of granite"

people - (plural) any group of human beings (men or women or children) collectively; "old people"; "there were at least 200 people in the audience"

admass - the segment of the public that is easily influenced by mass media (chiefly British)

audience - the part of the general public interested in a source of information or entertainment; "every artist needs an audience"; "the broadcast reached an audience of millions"

international - concerning or belonging to all or at least two or more nations; "international affairs"; "an international agreement"; "international waters"