All available evidence points to the fact that the Universe is open and it is ceaselessly expanding. Space means the whole universe, including the earth, while outer space refers to space other than the earth; outer space begins where the earth's atmosphere ends and extends in all directions.
Like, the air we breathe, space is everywhere and all around us. Most people describe space as the universe and do not distinguish between them. When the Universe was first talked of, as an orderly unit, it was called the cosmos, to distinguish it from chaos or disorder. The study of the cosmos was known as Cosmogony or Cosmology.
The popular references now are to space and space sciences. Space is a wholly natural phenomenon and cannot either be created or destroyed by mankind, while the space sciences are evolved by talented scientists, a part of mankind.