The image above is of a comet passing through the Hercules constellation. I was not viewing the night sky when it passed, however in the description it says that the comet would have been below the visibility for the naked eye. I did not know that the tail of the comet contained iron. I was under the impression the tail was simply dust and debree from whatever compound the core of the comet was made of. I assume this particular comet contains iron if its tail is composed of iron. The description states the tail is altered by space wind. This concept is confusiong as I try to assimilate it with wind on Earth. However this can not be the same as there is no oxygen is space.
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