  Examples of the power law spectra observations in the Nature are given. It is
shown that the observed meteoroid mass spectrum is very similar to the observed
cosmic ray energy spectrum. It is concluded that the "knees" observed in both
spectra have a similar origin: the Earth's atmosphere. Both spectra are studied
by indirect methods through secondary components and specific behavior of these
components in the atmosphere could produce the "knee" even in a case when
primary spectrum follows a pure power law.
