It is not yet clear how they would build themselves up to become the large galaxies we see today.

It may form one of the largest galaxies in the Universe.

One study found that large galaxies merged with each other on average once over the past 9 billion years.

Two members of an exceedingly small family in an extremely large galaxy.

"But you say three quarters of all large galaxies are spirals?"

Instead, they gradually merge to form a single, larger galaxy.

For such a large galaxy, this would have been a tremendously explosive event of star birth.

The center star is only magnitude 13, so it cannot be a large galaxy.

Its distance is now known to be 2.2 million light-years, making it the closest of the really large galaxies.

Our solar system has been described as being placed in the suburbs of a very large galaxy.