In a previous article the author introduced the Scale Expanding Cosmos (SEC) theory and showed that this new theory could resolve several problems with the Standard Cosmological Model. This new theory better agrees with observational data, for example the number count test, the angular size test, the surface brightness test and the supernovae Ia observations. In addition it provides a simple explanation to the Pioneer anomaly. The SEC theory predicts new and testable cosmological features among them cosmic (velocity) drag, which is the subject of this paper. I will show that currently there is substantial evidence for cosmic drag and suggest how this new and unexpected aspect of the universe may be confirmed by observations in the solar system.
