Rev 12:1 And there appeared a great wonder in heaven; a woman clothed with the sun, and the moon under her feet, and upon her head a crown of twelve stars:
Rev 12:2 And she being with child cried, travailing in birth, and pained to be delivered.
I do not believe this has anything to do with actual stars in heaven,but the woman is Israel,and the 12 stars the 12 tribes of Israel,and also she is pregnant with child,and what will she give birth to a baby formed of stars,but the child is Christ Jesus.
Rev 12:3 And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.
Rev 12:4 And his tail drew the third part of the stars of heaven, and did cast them to the earth: and the dragon stood before the woman which was ready to be delivered, for to devour her child as soon as it was born.
Rev 12:5 And she brought forth a man child, who was to rule all nations with a rod of iron: and her child was caught up unto God, and to his throne.
Satan against Jesus,the Savior of the world,who came through Israel,but He was caught up to heaven,who will come back and rule the world with an iron rod.The third part of angels that he cast down is the rebellion in heaven,and God kicked him out with his angels.
The 7 heads Egypt,Assyria,Babylon,Medo-Persia,Greece,the Roman Empire,the ten horns-the world split in to ten sections with a leader in each section,the ten horns-the physical dominion of the beast kingdom,which shall devour the whole earth,tread it down,and break it in pieces.
The crowns are on the heads,Satan in the spiritual realm deceiving the nations.Revelation 13 the crowns are on the horns,Satan in the physical realm deceiving the nations as the man of sin,the beast.
Rev 12:6 And the woman fled into the wilderness, where she hath a place prepared of God, that they should feed her there a thousand two hundred and threescore days.
God will give the world 7 years to have their way,and cause all people that do not love Him to follow the beast kingdom,and bring Israel to the truth that Jesus is their Messiah.
The first three and one half years,repentance,and salvation,is still available to the world.
The nation of Israel protected for the first three and one half years from physical attack.
Rev 12:7 And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,
Rev 12:8 And prevailed not; neither was their place found any more in heaven.
Rev 12:9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him.
This war is not the rebellion in heaven where the fallen angels were kicked out,but Satan is the prince of the power of the air.This is a future war.
6 trumpets,6 disasters that the earth knows about as warnings to turn to God,after the 6th trumpet they do not turn to God,and repent of their evil ways,and keep trying to solve their problems despite they are failing at it.
After the 6th trumpet and they do not turn to God,He gives them the man of sin,the beast,to rule over the world.
Rev 18:1 And after these things I saw another angel come down from heaven, having great power; and the earth was lightened with his glory.
Rev 18:2 And he cried mightily with a strong voice, saying, Babylon the great is fallen, is fallen, and is become the habitation of devils, and the hold of every foul spirit, and a cage of every unclean and hateful bird.
War breaks out in heaven,and the dragon and his angels are cast to earth,which becomes their holding cell,and Satan appears as the man of sin,the beast,which the man of sin is mighty,but not by his own power.
Since they did not turn to God,He allows the man of sin to deceive all those who do not love the truth.
Rev 12:10 And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.
Rev 12:11 And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.
Rev 12:12 Therefore rejoice, ye heavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time.
Rev 12:13 And when the dragon saw that he was cast unto the earth, he persecuted the woman which brought forth the man child.
Rev 12:14 And to the woman were given two wings of a great eagle, that she might fly into the wilderness, into her place, where she is nourished for a time, and times, and half a time, from the face of the serpent.
Rev 12:15 And the serpent cast out of his mouth water as a flood after the woman, that he might cause her to be carried away of the flood.
Rev 12:16 And the earth helped the woman, and the earth opened her mouth, and swallowed up the flood which the dragon cast out of his mouth.
Rev 12:17 And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ.
The great tribulation.The nation of Israel is protected for the last three and one half years from physical attack,and the beast makes war against all people which keep the commandments of God,and have the testimony of Jesus Christ.
This has nothing to do with a sign in heaven of the sun,moon,and stars,for the woman is pregnant with child,who is Christ Jesus,and also the woman fled in to the wilderness where she is protected for three and one half years,and then protected for another three and one half years,7 years,from physical attack on earth,and the dragon made war with the remnant of her seed,and how can that apply to a sign in heaven of the constellations.