Click icon to see a spiral galaxy of Messier's catalog ... Spiral galaxies in Messier's catalog: M31, M33, M51, M58, M61, M63, M64, M65, M66, M74, M77, M81, M83, M88, M90, M91, M94, M95, M96, M98, M99, M100, M101, M104, M106, M108, M109. Other early known spiral galaxy: Milky Way.
www.seds.org/messier/spir.html
Galaxies with their descriptions. ... We live in a giant spiral galaxy, the Milky Way Galaxy, of 100,000 light years diameter and a mass of roughly a trillion solar masses; our Sun is one of several 100 billions of stars of the Milky Way. ... Our sun is one of several 100 billion stars in a spiral galaxy, the Milky Way.
www.seds.org/messier/galaxy.html www.seds.org/messier/galaxy.html
Spiral galaxy - Wikipedia, the free encyclopedia
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A spiral galaxy is a galaxy belonging to one of the three main classes of galaxy originally described by Edwin Hubble in his 1936 work “The Realm of the Nebulae” and, as such, forms part of the Hubb...
en.wikipedia.org/wiki/Spiral_galaxy
Spiral galaxies with short descriptions and photos. ... The figure below right shows a nice spiral galaxy, M100, which is in the Virgo cluster Another beautiful example of a spiral galaxy is M83. Presumably our own galaxy would resemble these galaxies in appearance if we could view it from the outside.
csep10.phys.utk.edu/astr162/lect/galaxies/spiral.html csep10.phys.utk.edu/astr162/lect/galaxies/spiral.html
April 9, 1996 ; A Spiral Galaxy Gallery; Credit: NASA, UIT ... From left to right the galaxies are known as M33, M74, and M81 and have progressively more tightly wound spiral arms. Astronomers would classify these as Scd, Sc, and Sb type spirals using a galaxy classification scheme first worked out by Edwin Hubble.
antwrp.gsfc.nasa.gov/apod/ap960409.html
APOD: 2003 April 13 - NGC 1365: A Nearby Barred Spiral Galaxy ; Explanation: Many spiral galaxies have bars across their centers. Even our own Milky Way Galaxy is thought to have a bar, but perhaps not so prominent as the one in NGC 1365, shown above.
antwrp.gsfc.nasa.gov/apod/spiral_galaxies.html antwrp.gsfc.nasa.gov/apod/spiral_galaxies.html
BARRED SPIRAL GALAXY; NGC 1365, a barred spiral galaxy in the Fornax cluster of galaxies. It is about 60 million light-years from Earth. ... This spiral galaxy formed about 14 billion years ago. It takes the sun roughly 250 million years to orbit once around the Milky Way. The Earth is about 26,000 light-years from the...
www.enchantedlearning.com/subjects/astronomy/stars/gala... www.enchantedlearning.com/subjects/astronomy/stars/galaxy/spiral.shtml
The bright spiral galaxy Messier 83 (NGC 5236) in Hydra, in a (nearly) true-color composite image based on 4-minute blue and 2-minute red exposures (in twilight) with a Tektronix 2048x2048 CCD at the prime focus of the 4-meter Mayall telescope of Kitt Peak National Observatory.
www.astr.ua.edu/gifimages/m83.html
Spiral galaxies are rotating disk systems of stars, gas and dust. Due to their varying orientations in the sky, they may appear as face-on whirlpools, edge-on disks, or as something in between. Spirals are classified based on the tightness of their arms the size and shape of their nucleus.
www.noao.edu/image_gallery/spiral_galaxies.html www.noao.edu/image_gallery/spiral_galaxies.html
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