I got to see them deploy. Whole chain of them lit the sky in a row. At first I thought it was a plane then once it got closer I could easily see it was a satellite cluster flying past. Dropping by but we're not going to get technical.

Saw it twice. Second time was harder to see because they had already spread out and moving slower.

Almost as if I got to witness at initial deployment and then mid orbital position.

We use to watch the old slower ones as kids. Cool, crisp, clear, Autumn night and see that slow thing with its weak ass strobing light creep by. Good times.

I believe it's compressed CO2 or oxygen they use for fuel. Used for positioning and flight longevity. It's a trade off a sat that moves around a lot and falls or use the fuel for minimal movement but keep it afloat.