As the magazine "Scientifik America" reports for May of this year, first of all, this suspicion concerned the automatic interplanetary stations Pioneer-10 and Pioneer-11 ". Recall that the first space probe, Pioneer-10, launched on March 2, 1972, and left our solar system in June 1983. The mission of Pioneer 10 officially ended on March 31, 1997, but its radio system continued to operate for a long time. Pioneer 11 was launched on April 6, 1973, flew past Jupiter and Saturn and went beyond the solar system, but suffered damage to its radio complex.
An analysis of the motion of these stations in the period from 1987 to 1995 allowed specialists to draw the following conclusion: after taking into account the known sources of errors, the devices still have anomalous acceleration directed towards the Sun. In search of the reasons for this anomalous phenomenon, astrophysicists were forced to turn to unconventional versions of hypotheses of the universe. In particular. M. Milgrom proposed to change our classical concept of inertia and to develop the so-called - modified Newtonian dynamics”! It assumes that the usual gravitational force at very large distances decreases more slowly than the square of the distance, and therefore will have a stronger effect in regions far from the Sun!