At the beginning of Revelation 9, there is a picture of a star falling from the sky to the earth. And this star is given the keys to the great abyss. In Revelation, stars seem to represent angels. Here is a passage from Isaiah:
How you have fallen from heaven,
O morning star, son of the dawn!
You have been cast down to the earth,
you who once laid low the nations!
You said in your heart,
“I will ascend to heaven;
I will raise my throne
above the stars of God;
I will sit enthroned on the mount of assembly,
on the utmost heights of the sacred mountain.
I will ascend above the tops of the clouds;
I will make myself like the Most High.”
But you are brought down to the grave,
to the depths of the pit.
Remember, if you find yourself confused, you are in good company. To be honest, there are many things I read here, then read commentary from scholars, and still find myself confused. Revelation is not an easy read. But hang in there - there are some great pictures yet to come...