Why do spiral galaxies appear blue Astronomy defines a galaxy as any huge gathering of stars, gas and dusts, dark matterâ€Â, nebulae, and other known astronomical entities that exists in the universe. As numerous as&hellip
Why do spiral galaxies appear blue Astronomy defines a galaxy as any huge gathering of stars, gas and dusts, dark matterâ€Â, nebulae, and other known astronomical entities that exists in the universe. As numerous as&hellip