Enhanced picture of Comet Holmes to show the expanding cloud of dust from the outburst more clearly. The Earth is shown to scale at the lower right.
(T. Naylor/A. Fitzsimmons/C. Brunt/Isaac Newton Telescope – La Palma)
https://www.astroarts.org/downloads/specials/holmes2.jpg

The following image was captured by Mario Motta from the Amateur Telescope Makers in Boston and shows a jet blasting off one side of the comet:
https://www.astroarts.org/downloads/specials/76Comet-jet.jpg