For the first time, the attraction substance of substance to was "proved" by Cavendish's experience with torsion scales. By the way, if there were tidal forces according to E. Roche, then Cavendish would not be able to prove anything, since Cavendish set his torsional scales clearly below the limit of E. Roche, and tidal forces are obliged to break any very insignificant interaction. It should be said that the torsion scale device is very accurate, very sensitive and even too accurate. We need to measure a very small quantity, but at the same time there are many invisibly present in the experiment, which are comparable in their magnitude to the measured quantity. Here you have the centrifugal force from the rotation of the Earth around its axis, and the centrifugal force from the rotation of the Earth around the Sun, and the Carioles force. Let us also briefly note that the Hungarian researcher Baron Etvesh used the same torsional scales to determine not the force of attraction between substance, but the difference in the force of attraction of material bodies and their centrifugal force of inertia resulting from the rotation of the Earth around its axis. In addition, we can't be sure that we know all the factors involved. In addition, we need to be sure that we do not even have a hint of air movement, or uneven heating of the interacting masses. You also need to be sure that there is no induced charge on the interacting masses. In addition, Cavendish and his repeaters in modern times worked only with metals. No one has tried to work with granite, or with wood, which is a lack of experience (or maybe they did, but it didn't work out, so we don't know anything about it). In our opinion, Cavendish's experiments in the atmosphere are not correct at all, since it is known that air molecules are in constant Brownian motion and, when the interacting masses are very close to each other, they shield each other from the repulsive impacts of the molecules, but do not shield them from the approach. There is an effect similar to the invention of Lesage, when he said that the bodies shield the ether. But we do not have a hypothetical ether, which does not exist in nature, but quite real air molecules, which push bodies towards each other during Brownian motion. Therefore, the experiments of Cavendish, and then of Baron Etvesh, prove nothing. They should be carried out in deep space, away from gravitational bodies and so that there is no atmosphere.
When systematic scientific studies of the habitat began, the difficulties of the law of universal gravitation continued to grow and have now reached critical importance. Specially conducted experiments have shown that Everest does not deflect the plumb line, which contradicts the law of universal gravitation.
In the XXI century, attempts to lower a tripod for a lighthouse, or a small probe for taking soil from an asteroid, have become more frequent. I must say that all attempts to "land" or "land" something on an asteroid end unsuccessfully. It would seem that what is easier, but no-tripods and devices aimed at the asteroid, knock on it, fly off and fly again into space. It is very characteristic that not a single object began to revolve around the asteroid. All this indicates the failure of both the law of universal gravitation and the General theory of relativity.
