In HUbble vs Webb pictures we see the dying start picture. Why after 24 years it is still is a dying explosion scene. Shouldn’t be an instant?

Question

NASA released the latest pictures from Webb. You can see a link to a dying start here:
https://webbtelescope.org/contents/news-releases/2022/news-2022-033?Collection=First%20Images

I am not sure, how it is possible that after 24 years, it seems the dying star explosion is still in a very similar size and shape. Can someone please what exactly we are observing in this picture.

In: 2

Answer 1

that cloud is thousands of years old and half a light year across

even moving *at* lightspeed it needs a while for that cloud to expand visibly, and its a fair bit slower