Final answer:
If the Sun were at or close to the galactic center of the Milky Way, the nighttime sky on Earth would be significantly brighter and more illuminated due to the high density of stars and interstellar matter in that region.
Step-by-step explanation:
If the Sun were to be at or close to the galactic center of the Milky Way, the intensity of starlight in the nighttime sky on Earth would be significantly brighter compared to our current sky. The galactic center is a region with a high density of stars and interstellar matter, so the night sky would appear much more illuminated. Additionally, there would likely be more visible stars and celestial objects due to the higher concentration of stars in the galactic center.