Credit & Copyright: Rogelio
Bernal Andreo
Explanation:
Well over a thousand galaxies are known members of
the Virgo Cluster,
the closest large cluster of galaxies to our own
local group.
In fact, the galaxy cluster is difficult
to
appreciate all at once because
it covers such a large area on the sky.
This careful wide-field
mosaic of telescopic images
clearly records the central region of the Virgo Cluster through faint
foreground dust
clouds lingering above the plane of our own Milky Way galaxy.
The cluster's dominant giant elliptical
galaxy M87, is just below and to the left of the frame
center.
To the right of M87 is a string of galaxies known as
Markarian's Chain.
A closer examination of the image will
reveal many Virgo cluster member
galaxies as small fuzzy patches.
Sliding
your cursor over the image will label the larger galaxies
using NGC catalog designations.
Galaxies are also shown with
Messier
catalog numbers, including
M84, M86,
and prominent colorful spirals
M88,
M90, and
M91.
On average, Virgo Cluster galaxies are measured to be
about 48 million light-years away.
The Virgo
Cluster distance has been used to give an important
determination of the Hubble Constant and
the scale of the Universe.
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