context: The conclusion about the existence of dark matter is made on the basis of numerous, consistent with each other, but indirect signs of the behavior of astrophysical objects and the gravitational effects they create. Clarification of the nature of dark matter will help solve the hidden mass problem, which, in particular, consists in the anomalously high rotation speed of the outer regions of galaxies [2].
question: Based on what is the conclusion about the existence of dark matter?
answers.text: numerous, consistent with each other, but indirect signs of the behavior of astrophysical objects and the gravitational effects they create