This is a fantastic image directly from NASA’s archives and shows the wonders of the universe.
Note that some of the NASA spaces images have some slight blurring due to the subject, this is natural. You have your choice of size and finish for the photo. The size you choose may require cropping and the finished image may appear slightly different than the one shown. If preferred a white border can be added above/below or left/right to allow all of the original image to print. Unless requested when placing your order, your image may be cropped. If you would like to see how a specific image will look for the size you have chosen, please contact us and indicate the size you are interested in.
Note that some of the NASA spaces images have some slight blurring due to the subject, this is natural. You have your choice of size and finish for the photo. The size you choose may require cropping and the finished image may appear slightly different than the one shown. If preferred a white border can be added above/below or left/right to allow all of the original image to print. Unless requested when placing your order, your image may be cropped. If you would like to see how a specific image will look for the size you have chosen, please contact us and indicate the size you are interested in.
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Hot and Cold in the M100 Galaxy
The galaxy Messier 100, or M100, shows its swirling spiral in this infrared image from NASAs Spitzer Space Telescope. The arcing spiral arms of dust and gas that harbor starforming regions glow vividly when seen in the infrared.
M100 is a classic example of a grand design spiral galaxy, with prominent and well-defined spiral arms winding from the hot center, out to the cooler edges of the galaxy. It is located about 55 million light years away from Earth, in the little-known constellation of Coma Berenices, near to the more recognizable Leo.
In the center, we can see a prominent ring of hot, bright dust surrounding the inner galactic core. Moving further out, the spiral arms peter out towards the edges of the galaxy, where thick webs of dust dominate. Beyond the edges of the dust clouds, a faint blue glow of stars extends to the edge of the galaxys disk.
Two small companion galaxies, known as NGC 4323 and NGC 4328, appear as fuzzy blue blobs on the upper side of M100. These so-called lenticular galaxies are virtually clear of any dust, so they lack any of the red/green glow seen in their bigger neighbor. The shape of M100 is probably being perturbed by the gravity of these galaxies.
M100 was discovered in 1781, and is now known to stretch roughly 160,000 light years from one side to the other, making it about one and a half times the size of our own Milky Way galaxy. By studying these infrared images of M100, astronomers can map out the structure of the stars and dust, and study the ways in which galaxies like our Milky Way were formed.
M100 is well-known to astronomers because of the five stars that have become supernovae within the galaxy between 1901 and 2006. These exploding stars are extremely useful for helping astronomers to calibrate distance scales in the universe, and to estimate the age of the universe since its creation in the Big Bang.
The green regions reveal dust clouds that light up under the illumination of the surrounding stars. The longe
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