NASA's Spitzer Space Telescope captured the picture on the left of Comet Holmes in February 2008, 4 months after the comet suddenly erupted and brightened a million-fold overnight. The contrast of the picture has been enhanced on the right to show the anatomy of the comet. The infrared picture reveals fine dust particles that make up the outer shell, or coma, of the comet. The nucleus of the comet is within the bright whitish spot in the center, while the yellow area shows solid particles that were blown from the comet in the explosion. The contrast-enhanced picture shows the comet's outer shell, and strange filaments, or streamers, of dust. The streamers and shell are a yet another mystery surrounding comet Holmes.