Questions tagged [visual-signature]

Bright flame, smoke trail or exhaust plume causing increase visibility of a rocket or a missile and its trajectory.

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1answer
171 views

Why did Roadster (Starman) look fuzzy before the long burn to deep space started?

Information in this answer and in this answer shows that Derek C. Breit's hand-held video of the Falcon Heavy 2nd stage near the end of its six hour Earth orbit was recorded in the last minutes before ...
9
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2answers
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Are there satellites in LEO that can be seen by naked eyes in the daytime?

Are there any satellites in LEO that we can see with naked eyes in the daytime, or any special situations where they might become visible during the day? If there is, how high, and at what ...
11
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1answer
413 views

Why is one of these two concurrent fuel-dump spirals blue?

This comment mentions the amazing double-spiral event seen in the night sky from Norway that Wikipedia calls the 2009 Norwegian spiral anomaly. The Gizmodo article Giant Mysterious Spiral Takes Over ...
5
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1answer
316 views

Why did the “Secretive SpaceX Zuma Launch” make a big “S” or yin-yang shape in the sky?

The Space.com article Strange Sky Spiral May Come from Secretive SpaceX Zuma Launch shows images from this Tweet and this tweet, the second of which was posted by Dr Marco Langbroek (@Marco_Langbroek):...
3
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1answer
175 views

Does velocity of the exit gasses of a rocket affect visibility of the plume?

A rocket moves under the conservation of linear momentum, where the gases formed inside it, exit through the nozzle, and in turn, the rocket moves forward. What I want to ask about is that: is it true ...