ConceptualizedNetherlandr
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It's when the incoming meteoroid has been slowed by Earth's atmosphere and is then falling by gravitational pull alone. It's then sufficiently slow and has cooled to the extent that heat generated by ablation (not friction, which plays only a small part) and consequent light emission is no longer strong enough to produce a visible fireball or streak.
What you see in my wife's picture is a trail of debris from the disintegration of the meteor, but it's not glowing and would have been unseen if it had been night-time (the picture was taken at dusk). A little later, as it was beginning to get dark, she took other pictures of light streaks higher up in the atmosphere:
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You had me with 'What you see in my wife's picture' but then lost me ...