In the beginning, notice how the video selects a tiny portion of our own sky, then takes merely a slice of that. It scans an actual NASA photograph of part of the neighboring Andromeda Galaxy. (We live in the Milky Way Galaxy).
All those points of light in the photograph are stars, not dust. Dust does not emit light, dust is dark, dust obscures the light from the stars. Dusty areas are dark areas. If it glows, it is a star.
“The full image takes you through 100 million stars and travels more than 40,000 light-years. Each of those white dots is a sun, much like the sun that powers all life on Earth.”
How many stars are there? There are too many for us to count. There are too many for us to count even in our own galaxy. And there are countless galaxies. We do not have the ability to count the galaxies or the stars. Only God knows the true number.
“And I will show wonders in the heavens above and signs on the earth below …” (Acts 2:19, ESV).