Revelation 12:7-8

 ⁷ And war broke out in heaven; Michael and his angels fought against the dragon. The dragon and his angels fought back, ⁸ but they were defeated, and there was no longer any place for them in heaven.

I found the timeline of this a bit confusing; it does appear that at the beginning the woman exists in some kind of astronomic frame with the symbols of the sun, moon and stars in the imagery, denoting outer space. The dragon's tail sweeps a third of the stars out of the sky; if this signifies all the angels that fought against God when Lucifer rebelled against Him this would suggest a tremendous amount of beings were banished to Hell by God for their rebellion.

Revelation 12:9

 ⁹ The great dragon was thrown down, that ancient serpent, who is called the Devil and Satan, the deceiver of the whole world—he was thrown down to the earth, and his angels were thrown down with him.

After God protects Christ by calling Him up to Heaven, and nourishes the Church/Israel (symbolized by the woman with the crown of stars) as she wanders in the wilderness, he casts Satan out of the heavens. The compatriots who plotted alongside of the devil to challenge God, referred to above as 'his' angels, are also thrown down to earth, as the prior verses say there is no place for them in Heaven any longer.