The Canada-France-Hawaii
Telescope provides this stunning image of the Perseus cluster of galaxies, also known
as Abell 426.
This
gigantic cluster is one of the most massive objects in the universe, and
brightest in terms of X-rays. It contains thousands of galaxies, in addition to
a cloud of gas which has a mass equivalent to — mind-bogglingly — trillions of
suns.
Also of
note (pun intended), astronomers have discovered that the gas in the core of
the cluster generates the lowest musical tone in the entire cosmos, a B-flat.
No human will ever hear it, as it exists 57 octaves below middle C on a piano.
— SPACE.com Staff
Credit: Canada-France-Hawaii
Telescope/Coelum
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