Were they all at the same altitude and in the same area of the sky? It's quite possible some could be water condensation but still look different due to different temperature or humidity level in the air the plane was flying through.
Were they all at the same altitude and in the same area of the sky? It's quite possible some could be water condensation but still look different due to different temperature or humidity level in the air the plane was flying through.
Were they all at the same altitude and in the same area of the sky? It's quite possible some could be water condensation but still look different due to different temperature or humidity level in the air the plane was flying through.