PRESENTATION OUTLINE
What is an Elliptical Galaxy
Elliptical galaxies are shaped like ellipses (stretched circles). They are divided into eight types: E0-E7 depending on how elliptical they are. E0 ellipticals are nearly circular, while E7s are very stretched out. Elliptical galaxies are made up of mostly old stars, and do not have much gas and dust. There is very little new star formation in these galaxies. Elliptical galaxies also come in many sizes. The largest galaxies we see are ellipticals, but, elliptical galaxies can also be small. About 60% of all galaxies are ellipticals.
ELLIPTICAL GALAXY IN SPACE
What creates an elliptical Galaxy
Spiral galaxies collide and the gas and dust spreads in the air. All the stars from the galaxies rapidly become compressed into the large elliptical Galaxy. Most of the stars are already old, and the hot gases are cooling, so hardly any new stars grow. These old stars let off a red light. It is also said that there are black holes in the center of Elliptical galaxies.
SPIRAL GALAXIES COLLIDING
AN ELLIPTICAL GALAXY FROM EARTH
