The universe is full of
. Many of the galaxies visible in small telescopes are included in Charles Messier's
. How many galaxies have we actually imaged? The
Hubble Deep Field
project can give you some idea.
Early in the twentieth century, Edwin Hubble sought to create a
system to classify
the galaxies. He came up with
three different categories
, such as the Milky Way,
, both giant and dwarf, and
Every galaxy we see can
fit into one of those categories
. The largest structures in the universe come in only a
You will note that many of the galaxies we talk about have catalog names that begin with NGC. What does
Looking for a particular star?
Find it here!
Here’s the list of all 88 recognized constellations