Elliptical galaxies are a type of galaxy characterized by their smooth, featureless appearance and overall elliptical shape. They are composed mainly of older stars, with little to no ongoing star formation, which gives them their distinct lack of dust, gas, and star-forming regions. Elliptical galaxies are typically found in galaxy clusters and are thought to form through galaxy mergers and interactions. Research on elliptical galaxies focuses on understanding their formation and evolution, as well as their role in the larger cosmic structure. Scientists study their stellar populations, kinematics, and relationships with other galaxies to gain insights into the processes that shaped them. The study of elliptical galaxies also helps astronomers understand how galaxies evolve over time and how they contribute to the overall structure of the universe.