Yesterday I saw what I thought was a "shooting star" and two "satellites". I always thought that the atmosphere is where we breathe and past that there is no oxygen (space). I thought that the space between is the firmament. I thought a "shooting star" was something passing from space, through the firmament, to the atmosphere and burning up. That is how my brain rationalized the Bible. Do you flat earth believers have an explanation for what I saw?
Your brain rationalized the Bible by imposing onto it the modern cosmology that was drilled into it. All we see is a light passing through the sky. Even today, if you see a light moving through the sky, it could be any kind of craft. Can you tell just by looking at it how far it is away from you? If planes fly through the sky at night, they also look like little lights. Are they too flying through "space". Reportedly the Starlink satellites are the size of an office desk and are allegedly between 200 and 300 miles away, and have no exterior illumination. So how can you see something the size of an office desk from 200+ miles away at night when it has no source of light? Maybe they're not what Elon et al. claim they are. Have you ever thought about that?
Somehow in your mind, you think this is proof that "space" exists, because you saw a light moving through the sky? That speaks volumes about the fact that you're clearly applying your own confirmation bias onto what you saw.
Lights passing through the sky could be anything, things moving through the firmament, various aircraft (altitude and size unknown and unknowable from your vantage point on the ground), something with an electric charge moving across the firmament, or some charged object, etc. etc.