Changes

==Clasification==

==Clasification==

Elliptical galaxies lie on the "handle" side of the Hubble tuning fork diagram. Different ellipticals are classified by their [[ellipse|eccentricity]], or how "elliptical" they are, with a larger number meaning they are more "elliptical". This is calculated using the formula:<ref name=britannica/>

Elliptical galaxies lie on the "handle" side of the [[Hubble tuning fork diagram]]. Different ellipticals are classified by their [[ellipse|eccentricity]], or how "elliptical" they are, with a larger number meaning they are more "elliptical". This is calculated using the formula:<ref name=britannica/>

:<math>

:<math>

</math>

</math>

Where a and b are the semi major and semi minor axes of the galaxy as seen from [[Earth]]. n is rounded to the nearest [[integer]] and the galaxy labelled "En". For example, an E0 galaxy is perfectly spherical, while an E7 has a very high eccentricity. No elliptical galaxies have n greater than 7.<ref name=britannica/>  

Where a and b are the semi major and semi minor axes of the galaxy as seen from [[Earth]]. n is rounded to the nearest [[integer]] and the galaxy labelled "En". For example, an E0 galaxy is perfectly spherical, while an E7 has a very high eccentricity. No elliptical galaxies have n greater than 7.<ref name=britannica/>

==References==

==References==