The Bible describes a firmament separating earth from the heavens. The firmament seems to be some sort of solid barrier or dome that is around or above the earth. This differs significantly from the modern scientific view according to which the earth is surrounded by the atmosphere with different gases, but nothing solid.
The notion of the firmament has risen in relevance mainly due to the Flat Earth debate that has emerged fairly recently. Although if the firmament actually exists, it does not necessarily imply the earth is flat. A round, bubble-like firmament could encase the earth as well a dome might encase of flat earth. Therefore I won’t be discussing the shape of the earth in this post.
I think I should point out I am not a flat earther, nor a round earther. I am a truth seeker, and I do find the current flat earth debate relevant as there are many questions as to the nature of our world. If you think it is dumb merely to entertain the possibility that the earth might be flat, please forever hold your speech.
The Firmament and the Stars
Let’s see what the Bible says about the firmament.
1 In the beginning God created the heaven and the earth.
2 And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.
3 And God said, Let there be light: and there was light.
4 And God saw the light, that it was good: and God divided the light from the darkness.
5 And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.
6 And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.
7 And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so.
8 And God called the firmament Heaven. And the evening and the morning were the second day.
14 And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:
15 And let them be for lights in the firmament of the heaven to give light upon the earth: and it was so.
16 And God made two great lights; the greater light to rule the day, and the lesser light to rule the night: he made the stars also.
17 And God set them in the firmament of the heaven to give light upon the earth,
18 And to rule over the day and over the night, and to divide the light from the darkness: and God saw that it was good.
According to my understanding of the biblical description, what we call space (with the sun, moon and stars) is the firmament. The firmament is not behind them. Behind the firmament should be water. When we look up at the night sky and see stars and constellations we are seeing inside the firmament.
What is the Firmament made of?
The book of Job, which is supposedly the oldest book in the Bible describes the firmament as follows:
Libyan desert glass: https://en.wikipedia.org/wiki/Libyan_desert_glass
Glass sky, Libyan Desert Glass, indeed this could be an answer !! : https://www.youtube.com/watch?v=-P_oNZPw79o