What does the smoother, broad appearance of the Eastern Veil suggest about the surrounding interstellar medium?
Answer
The shockwave moved into a region of more uniform material
The Eastern Veil's relatively smooth sheet of emission implies that the shock front expanded into interstellar material that was more uniform and perhaps slightly less dense in that direction.
Related Questions
Where is the Veil Nebula physically situated within the Milky Way galaxy?Approximately how long ago did the supernova event that created the Veil Nebula occur?What is the approximate minimum diameter of the Veil Nebula remnant?Which designation is associated with the Western Veil Nebula, often called the "Witch's Broom"?Which catalog designation sometimes groups the Eastern Veil Nebula components?Why does the Veil Nebula appear as vibrant, striking colors in deep-sky photographs?What causes the visible light emission observed in the Veil Nebula?In composite astrophotography images, which emission, often rendered in blue or cyan, showcases the shock-heated gas structures?What does the smoother, broad appearance of the Eastern Veil suggest about the surrounding interstellar medium?What is the ideal season for observing the Veil Nebula from the Northern Hemisphere?