"The great dragon was hurled down"

Revelation 12:8-9 But he was not strong enough, and they lost their place in heaven. The great dragon was hurled down—that ancient serpent called the devil, or Satan, who leads the whole world astray. He was hurled to the earth, and his angels with him.

Why did I draw three layers? There are three heavens listen in the Bible.

2 Corinthians 12:2
I know a man in Christ who fourteen years ago was caught up to the third heaven. Whether it was in the body or out of the body I do not know—God knows.

Where does Satan live? Probably in the Second Heaven, but has or had access to the Third.

 Job 1:6
One day the angels (sons of God) came to present themselves before the LORD, and Satan (accuser) also came with them.

The Devil and his angels might be able to hinder the flow of Angels to earth until this day.

Daniel 10:13
But the prince of the Persian kingdom resisted me twenty-one days. Then Michael, one of the chief princes, came to help me, because I was detained there with the king of Persia.

Daniel 10:20
So he said, "Do you know why I have come to you? Soon I will return to fight against the prince of Persia, and when I go, the prince of Greece will come;

These stair might be the tunnel of light, a way to get to heaven from earth. Testimonial of people that have experienced life after death experiences, mention seeing tormented souls on their way to heaven.

Luke 16:23
In hell, where he was in torment, he looked up and saw Abraham far away, with Lazarus by his side.

Genesis 28:12
He had a dream in which he saw a stairway resting on the earth, with its top reaching to heaven, and the angels of God were ascending and descending on it.

Since Death and Hades do not give up their dead until the final judgment. Death and Hades as workers of Satan might live and hold lost souls in the Second Heaven.

Revelation 20:13
The sea gave up the dead that were in it, and death and Hades gave up the dead that were in them, and each person was judged according to what he had done.

Also 1/3 of the Stars are represented as 1/3 of the Angels that work with Satan.

Revelation 12:4
His tail swept a third of the stars out of the sky and flung them to the earth. The dragon stood in front of the woman who was about to give birth, so that he might devour her child the moment it was born.

Deuteronomy 4:19
And when you look up to the sky and see the sun, the moon and the stars—all the heavenly array—do not be enticed into bowing down to them and worshiping things the LORD your God has apportioned to all the nations under heaven.

Psalm 148:3
Praise him, sun and moon, praise him, all you shining stars.