What are the primary categories that astronomers use to classify galaxies? How do these categories relate to the age, composition, and structure of galaxies? | The Brain Maze

The Andromeda Galaxy in 5 types of light. 🌀 This new image shows the Andromeda Galaxy in 5 different types of light (X-ray, UV, optical, infrared, and radio) from some of the world’s most powerful telescopes, including NASA’s Chandra X-ray Observatory. Andromeda, also known as M31, is the closest spiral galaxy to the Milky Way at a distance of about 2.5 million light-years. This image is being released in tribute to the groundbreaking legacy of Dr. Vera Rubin, whose observations transformed our