Taken by people in their own back yards. Inspirational.

the Jellyfish in the upper right of the image is about 5,000 light
years away in the constellation Gemini. It is the remnant of a
supernova that exploded around 30,000 light years ago.

' 5 000 light years away', I get, as it's a measure of distance, but then shouldn't it be simply '30 000 years away' (this being a measure of time)?

That is correct, it must have been an oversight on the part of the author of the article, with the editor obviously not having a clue what it was about.

Stunning pictures though.