How wide is the Milky Way Galaxy in light years?

The correct answer reflects the generally accepted width of the Milky Way Galaxy, which is approximately 100,000 light years across. This measurement is based on extensive astronomical observations and studies of the galaxy's structure, including its disk and halo.

The Milky Way is a barred spiral galaxy, and its dimensions have been determined through various methods, such as star counting and the mapping of the distribution of stars and gas throughout the galaxy. Research indicates that while the galaxy features a central bulge, its disk, where most of the stars are located, extends about 100,000 light years in diameter.

This answer helps distinguish the dimensions of other galaxies and emphasizes the scale of our galaxy in the universe, which is significant for understanding cosmic structures and the dynamics of galaxies.