Elliptical galaxies are a type of galaxy that have a round or elliptical shape, unlike the spiral galaxies which have arms. They appear smooth and do not have a lot of gas and dust like other galaxies. Full definition
Most clusters in the universe today are dominated by giant elliptical galaxies in which the dust and gas has already been formed into stars. (sciencedaily.com)
This image shows a large elliptical galaxy in blue - green, with a thin disk galaxy (red) embedded within. (livescience.com)
A still - growing core of a galaxy in the early universe may help astronomers understand how massive elliptical galaxies get their start. (sciencenews.org)