This emerged in the western sky on October 27th. Had no idea there was a falcon 9 launch. It was well after sunset. Wondering how high in the atmosphere this would have to be to be visible from Eastern Utah.

https://i.redd.it/su2l9dljryyf1.jpeg

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  1. Unsure about the height in this launch, but I (northern FL) can see the Starships when the launch from Texas as it flies between Florida and Cuba which is 300-400 miles away, so I’d bet it was a starship launch. At sunset, the launches exhaust plume is highlighted by the sun and its much larger than the engines appear, so that could be what you’re seeing also

  2. Yeah, these were “jellyfish conditions” – the Sun was set from Utah for a few minutes, and the rocket launched in daylight. So the smoke from the exhaust was well-lit. It contrasts against the darkening sky.

    The first stage on Starlink launches gets up to 120km or so and the 2nd stage gets as high as 155km before second engine cutoff. But that’s 8 minutes into flight, well after it’s gone too far to see. It’s probably in the 120-140km range by the time it reaches the horizon to the south and disappears from view.

    [Here’s the SpaceX mission video for reference](https://www.reddit.com/r/space/comments/1on1qhh/falcon_9_launch_visible_from_utah/).