Pluto retrograde and stationary phases weaken the explosive energy effect of the extreme and ungovernable actions, causing a period where traders tends to wait and analyse more before acting. We can see in BTCUSD that in most of the retrograde periods of Pluto the price was trapped (sideways) within very narrow price range consolidating the price zone reached by the aggressive moves occurring during the Pluto direct motion phase.
Note: The Pluto speed indicator is based on an ephemeris array that covers years 2010 to 2030, prior or after this years the speed is not available, this daily ephemeris are based on UTC time so in order to align properly with the price bars times you should set UTC as your chart timezone.