Elliptical galaxy (photo: Caltech).The elliptical galaxy is an older galaxy. It tends to be filled with older red stars. This galaxy often has a reddish color. The elliptical galaxy has much less dust and gas than a spiral galaxy. As a result, there is little material available to make new stars.

Photo: Elliptical galaxy (Creative Commons: Caltech).

Age

An elliptical galaxy is less bright than the younger spiral galaxy. It also lacks the long spiral arms where stars are being formed. This type of galaxy is older with little dust and gas available for the creation of new stars.

Shape and Color

Elliptical galaxies have an ellipsoid shape. They range in shape from a round sphere to a flattened one.  These galaxies are filled with older red stars. As a result, they usually have a reddish color.

Origins

It is thought that elliptical galaxies are created when two galaxies collide and combine with each other. A super large black hole is thought to exist at the center of an elliptical galaxy. This black hole limits the formation of new stars.

Improving Your Reading and Thinking Skills

Think for a few moments. Try to recall the major ideas in this article. When you are done, click the box below for a list of main ideas.

 

How did you do? With practice, you should be able to identify many of the major ideas. You may even discover some important ideas that aren’t listed.

Bibliography

Centaurus A — New Insight to an Odd and Massive Elliptical Galaxy.

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4 comments on "Elliptical Galaxy: the Old Galaxy"

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Ronand Abella
Member

Ang elliptical galaxy ayisang manga matanda na mgabitwin na pulasalangit.Ito ay dalawanggalaxy na nag dikit at gumawa nangisa.At magawa nila ito masmarami and mga bitwin sa atingmundo.

Ronand Abella
Member

The elliptical galaxy is filled with red old stars.The are only less dust and gas in the elliptical galaxy to make a new star.An elliptical galaxy is created when two galaxies combine with each other.This black hole limits the formation of new stars.

Webster Gabiana
Member

planet are the best

Webster Gabiana
Member

the elliptical galaxy