This is not a comet .. Our Mercury tail is clear …

Mercury’s surface contains small amounts of sodium. The reason for this yellow tail is that it shines in the sunlight .

When exposed to sunlight, not only are the sodium atoms released, but other elements also come out of the surface in this way.

Mercury’s tail was first discovered in 2001. Then, from 2011 to 2015, Messenger orbited Mercury, giving it much clearer information.

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