Memorable Comets

Comet Holmes
17P/Holmes

    This is a photographic record of Comet Holmes, which displayed an explosive variation in brightness. At an early stage of the burst, its beautiful rare golden-color was impressive (Photo 1). But gradually, the coma changed to a mystical green (Photo 2). The characteristic feature of this comet was its well-defined outline of the coma like that of a soap bubble. This coma gradually expanded to a size spanning more than 3 degrees and disappeared into space.
    Photo 3 shows clearly the off-centered nucleus in the beautiful light blue coma. This beautiful comet grew fuzzy, infinitely diffused, and slowly faded. I wonder what it will look like when it returns next time.