A galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity. It can range from a few billion to over a trillion stars. Galaxies come in various shapes, including spiral, elliptical, and irregular. The Milky Way is the galaxy that contains our solar system.
Share
A galaxy is a vast, gravitationally bound system composed of stars, stellar remnants, gas, dust, and dark matter. Galaxies vary greatly in size and structure, with types including spiral (like the Milky Way), elliptical, and irregular. They can contain from a few billion to over a trillion stars. Galaxies are the fundamental building blocks of the universe, forming clusters and superclusters. The Milky Way, which is the galaxy containing our solar system, is a spiral galaxy. Understanding galaxies is crucial for studying the universe’s structure, formation, and evolution, and they play a central role in the field of cosmology.