Physics Galaxy Discussion Questions Solutions May 2026

Spiral galaxies, like the Milky Way, are characterized by a central bulge and a disk of stars, gas, and dust, with spiral arms of younger stars and star-forming regions. Elliptical galaxies, on the other hand, are egg-shaped and lack a disk, with a higher proportion of older stars and less gas and dust.

What is the relationship between galaxy size and galaxy mass? physics galaxy discussion questions solutions

Galaxy surveys have revealed a wealth of information about galaxy properties, distributions, and evolution. For example, surveys have shown that galaxies evolve along a tight correlation between galaxy mass and star formation rate, known as the star-forming main sequence. Spiral galaxies, like the Milky Way, are characterized