Perseus Cluster’s X-Ray Skull. [Credit: A. Fabian (IoA Cambridge) et al., NASA] Although it looks like something in torment, it’s just an X-Ray image of the Perseus Cluster of Galaxies. It doesn’t show the galaxies, only the X-rays given out by the gas between the galaxies. Mona Evans, "Cosmic Halloween Tour" http://www.bellaonline.com/articles/art52161.asp
Baby stars are forming near the eastern rim of the cosmic cloud Perseus in this infrared image from NASA's Spitzer Space Telescope. The baby stars are approximately three million years old and are shown as reddish-pink dots to the right of the image.
This looks more like a threatening ghost than either the dear old Horsehead Nebula or anything to do with the Fourth! But it's a Hubble Space Telescope infrared image of the Horsehead Nebula. (Credit: STScI/AURA/ESA/NASA) Mona Evans, "Cosmic Halloween Tour" http://www.bellaonline.com/articles/art52161.asp
A grinning one-eyed skull? Actually it's NGC 5189, a complex planetary nebula around a dying star. (Credit: NASA/JPL-Caltech/S.Carey (Caltech)) Mona Evans, "Cosmic Halloween Tour" http://www.bellaonline.com/articles/art52161.asp