What Is Space?

According to me space is a vast never ending 3 dimensional world . No atmosphere, no favourable conditions of living .
Third dimension is TIME.. According to Einstien time is Flexible!! To believe is a very tough deal but yes it is.
According to other sources   Space can be defined as:-
Space is the boundless three-dimensional extent in which objects and events have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime. In mathematics, "spaces" are examined with different numbers of dimensions and with different underlying structures. The concept of space is considered to be of fundamental importance to an understanding of the physical universe. However, disagreement continues between philosophers over whether it is itself an entity, a relationship between entities, or part of a conceptual framework.