Galaxies come
in diverse shapes and sizes. NGC 4414 — which is located about
62 million light-years away — is an example of a spiral galaxy.
As with most spirals, the central region of NGC 4414 contains primarily
older, yellow and red stars. The outer spiral arms are considerably
bluer due to ongoing formation of young, blue stars.
The stars form a flat disk that circles the nucleus — a disk
we see tilted, so it doesn't appear flat. Spiral galaxies like NGC
4414 display beautiful spiral arms made up of millions of young
stars. |
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How old is the universe?
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