Application of fluid mechanics to dark matter

A dark matter field fluid model is proposed. This model assumes that interstellar space is uniformly filled with dark matter, which possesses a fluid property and a field property; the fluid property follows general fluid mechanics, the interaction of the field with an ordinary baryonic object is proportional to the mass of the object, it also has a force opposing gravity. The data of the Moon-Earth gravitational system agrees with this model very well and the average dark matter field fluid constant is 4.39 x 10(-22)s(-1)m(-(1-n)). This is the first proof that the motion of celestial objects can be treated in a fluid medium. The cosmological redshift formula derived from this model describes the observed redshifts very well. A huge redshift from a distant celestial object may not necessarily indicate that it is quickly receding from us. The universe may not expand as rapidly as thought.