Scientific notions of the cosmos have their origins in the concepts of space, time and matter. Assumption of the postulates of both special theory of relativity and general theory of relativity has not allowed getting a non-contradictory physical model of the universe. We propose the following idea of the universe. Space embraces everything. It is non-deformable, three-dimensional, Euclidean. The visible space is filled by with ethereal medium. The physical model of the ethereal medium consists of two equal, but opposite in sign, types of particles. The particles are strongly attracted together forming a homogeneous space. Opposite in sign its particles move relative to each other frictionless. In the ethereal medium linear, circular and other movements of physical bodies as well as shear deformations may exist infinitely long. A magnetic field is the consequence of torsion, shear deformations of the ethereal medium. The ethereal medium has a certain electromagnetic density and elasticity. Physical bodies (elementary particles, gases, liquids, solid bodies, plasma et al.) take place in the space and ethereal medium. Gravitational influence of one physical body on the other is realized by means of the ethereal medium. Dynamical processes in the ethereal medium and movements of physical bodies may be fixed in time. Time is local, irreversible, one-dimensional, unilateral,? from the past to the future.