Astrophysicists Puzzle Over Webb’s New Universe

We are given a headline: "Astrophysicists Puzzle Over Webb’s New Universe | Quanta Magazine"

Source: Hacker News (but note: the article is from Quanta Magazine, so Hacker News is the platform where it was shared)

The original text is a long article about JWST observations challenging existing astrophysical models.

Constraints for the summary:

180-250 words total, split into exactly 3-4 paragraphs (each 45-65 words)
Use active voice, vary sentence structure
Bold 3-5 key details (only the most important: e.g., key company, critical figure, main fact)
Must end with a concrete statement (no "future looks bright" etc.)
Must not use banned words or phrases (see anti-AI rules)

Steps:

1. Identify the primary subject: JWST observations of early universe (black holes, galaxies) that challenge existing models.

2. Key facts from the text:

"little red dots" discovered by JWST (since 2022)
black holes too big for their age (e.g., billion-sun black holes in early universe)
Eddington limit (intake limit for black holes) and super-Eddington accretion
direct collapse mechanism (seeds 10,000 solar masses)
a specific example: a "naked" supermassive black hole (50 million solar masses) at 750 million years after Big Bang

3. We need to pick 3-5 key details to bold. The most critical:

"little red dots" (but note: the article says they were never seen before JWST, so that's a key discovery)
"50 million times the mass of the sun" (a specific, critical figure)
"40 times the Eddington limit" (another critical figure)
However, we can only bold 3-5 terms total. Let's choose:
little red dots (as the key discovery)
50 million times the mass of the sun (the specific mass estimate)
40 times the Eddington limit (the accretion rate)

But note: we must be selective. The article emphasizes that the black hole at 750 million years is 50 million solar masses without stars. Also, t