About Mozart’s Symphony No. 1 in Eb Major

I just finished listening to Mozart's Symphony No. 1 in Eb Major for the first time. It's a very nice piece of music with some notable flourishes. Oh . . . and perhaps you don't know this (I didn't): Mozart was 8 years old when he wrote this symphony. This leads me to ask myself: "How is this possible?"  I have no answers.  It seems impossible. Here's the first page of the handwritten manuscript written by 8-year old Mozart:

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The Colliding Mice Galaxies

NGC 4676 (the Mice Galaxies) are two spiral galaxies about 290 million light-years away. They are in the process of colliding and merging.

This photograph was taken by the Hubble Space Telescope in 2002. The size of this combined galaxy is 760,000 light years across. In the background of the Mice Galaxies, there are at least 3300 galaxies, at distances up to 13 billion light-years.

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