Browsing: Galaxy

A galaxy is a vast system of stars, gas, dust, dark matter, and other celestial objects bound together by gravity. Galaxies come in a variety of shapes and sizes, from sprawling spiral structures like the Milky Way to compact elliptical and irregular forms. They are fundamental building blocks of the universe, hosting everything from star-forming regions to supermassive black holes at their centers. Research into galaxies sheds light on cosmic evolution, the behavior of dark matter, and the large-scale structure of the cosmos, offering clues about the origins and fate of the universe itself.