Andromeda Galaxy Revealed In 1.5 Billion Pixel Image (Video)mpicpp (3454017) writes "The largest image of the Andromeda Galaxy (Messier 31) has recently been unveiled by NASA. Made up of an astonishing 1.5 billion pixels, a total of 600 high-definition television screens are required to view the entirety of the image. The composite photo is the largest and highest resolution image of the Andromeda galaxy, and was pieced together from over 400 images; a whopping 4.3GB of disk space is needed to house the 69,536 x 22,230 pixel image.
The breathtaking image was released on Jan. 5, showing the closest spiral galaxy to the Milky Way. The Andromeda galaxy is situated in the Andromeda constellation, and is some 2.5 million light-years from Earth. The galaxy is also thought to be the largest among those within the Local Group, as well as the most massive.
Representing one of the most impressive results of the Panchromatic Hubble Andromeda Treasury Program (PHAT), the panoramic image was obtained by the Hubble Space Telescope. Since Hubble typically looks towards more distant objects, it was capable of espying the Andromeda galaxy in unprecedented detail.
The photo shows around one-third of the Andromeda galaxy’s disk, which spans a total distance of 48,000 light-years. With the image showing more than 100 million stars – many of which are configured in enormous clusters – the Space Telescope Institute described the new observations as being akin to “ photographing a beach and resolving individual grains of sand.”
The images were collected using Hubble’s Advanced Camera for Surveys and the Wide Field Camera 3, with the galactic bulge displayed towards the left of the picture. As we move towards the right of the image, however, we start to see individual lanes of stars in the outer disc."
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