The Stars of  Heaven that were attached to Satan's tail reveals the fact that he will take with him a third of the Angels from Heaven, because the Angels are spoken of as Stars in the Old Testament.

         These Angels will be cast onto the earth with him. They will not be seen visibly but will secretly sow seeds of rebellion and will be cast into the Lake of Fire with Satan.

                  We are not told that Satan's Angels are bound with him when cast into the Bottomless Pit, but the inference is that they are during the Millennium [1000 reign of Jesus] because they do not seem to the present on earth.