View NGC 6745, the result of two galaxies that have been colliding for hundreds of millions of years. Provided by Astronomy Picture of the Day.
Chandra Observatory x-ray image reveals a cooling flow in the center of galaxy cluster Abell 1795. Provided by Astronomy Picture of the Day.
Enjoy a photograph of NGC 1300, a large spiral galaxy that appears as a flattened figure eight. Provided by the Anglo-Australian Observatory.
Astronomy Picture of the Day offers an image of Stephan's Quintet, a close grouping of five galaxies. Includes photo credits.
Photo shows the dwarf elliptical galaxy NGC 205, one member of the group of 25 galaxies known as the Local Group.
Enjoy an Astronomy Picture of the Day starring NGC 3184, a large spiral galaxy 25 million light years away from the Earth.
1996 Hubble Space Telescope image of the spiral galaxy M51's nucleus, a region which hosts millions of young stars.
Inspect a photo of the M63 spiral galaxy, also known as the Sunflower Galaxy. Provided by the National Astronomical Observatory of Japan.
Astronomy Picture of the Day presents the Hubble Space Telescope's ultraviolet photograph of the spiral galaxy NGC 3310.
Astronomy Picture of the Day provides a photograph of the densely-populated Coma Cluster of Galaxies. View a handful of its galaxies.
View a galaxy whose four center points of light, known as the Einstein Cross, are attributed to a background quasar and gravitational lensing.
Image created from a digital combination of 2MASS and MSX Galactic survey data reveals how the Galactic Center looks like in near-infrared light.
Photo of the sky above the South Pole includes the Southern Cross constellation, the orange star Gamma Crucis and the Coal Sack Nebula.
Enjoy an x-ray view of the Perseus Cluster of galaxies and view the "skull" at its center. Image taken from the orbiting Chandra Observatory.
Find two images of the dwarf elliptical galaxy IC3328, one of which reveals the surprising discovery of its spiral structure.
Examine a photograph of NGC 1316, an atypical giant galaxy which may help calibrate the universe. Provided by Astronomy Picture of the Day.
Astronomy Picture of the Day presents a false-color x-ray image from the orbiting Chandra Observatory. View black holes and neutron stars.
Chandra X-ray Observatory image of the cannibalistic Perseus A galaxy and the supermassive black hole at its center.
Enjoy a photograph of M31, also known as Andromeda, a galaxy two million light-years away from the Earth. Image by Robert Gendler.
Enjoy an image of the Virgo Cluster around its dominant giant elliptical galaxy M87. Includes a labelled version with NGC catalog numbers.
Features a picture taken by the Ultraviolet Imaging Telescope of the giant spiral galaxy Messier 101, also known as the Pinwheel Galaxy.
Find a photo of classic spiral galaxy M51, also known as the Whirlpool Galaxy. Includes a peek at a smaller galaxy behind the Whirlpool.
Hubble Space Telescope mosaic of images reveals the active galaxy Centaurus A. Learn about the black hole theory behind active galaxies.
Examine before and after images of a lunar occultation of the galactic x-ray source GX5-1. Learn why the x-ray star isn't visible in photo two.
Representative-color image from the Hubble Space Telescope reveals a strange bubble of hot gas in the center of the NGC 4438 galaxy.
Photo shows the NGC 1410 and 1409 galaxies and the 20,000-light-year-long pipeline of matter connecting the two.
Enjoy a NASA photograph of the grand design spiral galaxy M100, a large galaxy of over 100 billion stars with well-defined spiral arms.
Survey a representative color image taken by the Hubble Space Telescope of the Circinus Galaxy and its active galactic nucleus.
Chandra X-ray Observatory image of the million-light-year long jet of electrons and protons which stretches out from the Pictor A galaxy.
Scan a false-color X-ray image, taken by the orbiting Chandra Observatory, of the galaxy Cygnus A. Also view a false-color radio image.
Chandra Observatory X-ray spectrum of the NGC 3783 galaxy reveals a wind of highly-ionized atoms blowing out from a suspected central black hole.