In recent days a blue moon has been seen in Beijing.
Long ago and far away, I saw a blue moon. I was travelling over mountains, in a bus, at night. We had heard that far to our east a famous volcano was erupting. We could not see the eruption itself, but when the moon rose over the eastern mountains it was blue, very approximately the colour of faded denim. Everyone was moonstruck (you might say), but we quickly understood we were seeing the moon through the dust plume of the volcano.
The effect arises from dust particles of a particular size that must be rare in the atmosphere, otherwise we'd all see blue moons regularly. In Beijing the dust must have been blown by the wind from deserts to the north.
Blue Moon
In recent days a blue moon has been seen in Beijing.
Long ago and far away, I saw a blue moon. I was travelling over mountains, in a bus, at night. We had heard that far to our east a famous volcano was erupting. We could not see the eruption itself, but when the moon rose over the eastern mountains it was blue, very approximately the colour of faded denim. Everyone was moonstruck (you might say), but we quickly understood we were seeing the moon through the dust plume of the volcano.
The effect arises from dust particles of a particular size that must be rare in the atmosphere, otherwise we'd all see blue moons regularly. In Beijing the dust must have been blown by the wind from deserts to the north.
https://m.youtube.com/watch?v=ntDnwBiORu8