Stargazing Why does the asteroid Dimorphos leave a trail after impact?

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The asteroid Dimorphos leaves a trail after its impact with a spacecraft, despite occurring in a vacuum where air resistance is absent. The trail is likely caused by solar wind and light pressure, similar to how comets form tails. This phenomenon raises questions about the mechanics of debris movement in space. The discussion highlights the intriguing nature of asteroid behavior post-impact. Understanding these processes can enhance knowledge of celestial bodies and their interactions.
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Dimorphos seems to be leaving a trail of debris after the spacecraft impact. But why should the debris be left behind?
Pictures have appeared showing the asteroid Dimorphos following its impact with a spacecraft and showing a trail being left behind. On further consideration, this is taking place in a vacuum, so there is no air resistance. Why is the debris forming a trail behind the asteroid?
 
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tech99 said:
Why is the debris forming a trail behind the asteroid?
Just a guess, solar wind and light pressure makes tails, just like the tails of a comet.

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