Why can we see the Milky Way?

Answer: We are inside it

It reflects sunlight to Earth — Wrong. Galaxies do not reflect sunlight; they emit their own light from billions of stars. We see the Milky Way because we are part of it, not because it bounces sunlight toward us.

It is the brightest galaxy — Wrong. The Milky Way is not the brightest galaxy; it is simply the one we are inside. Other galaxies look dimmer mainly because they are incredibly far away, not because our galaxy outshines them all.

We are inside it ✓ — Correct! The Milky Way is our home galaxy, and we are inside it. The band of light we see is our view edge-on through the galactic disk, which is about 100,000 light-years across. We sit in a spiral arm roughly 26,000 light-years from the center, so the dense star clouds appear as a milky band across the night sky. It is best seen from dark locations away from light pollution.