# JWST Detects a 'Forbidden' Signal Never Before Seen in The Universe – Not Even in a Lab

Source: [ScienceAlert](https://www.sciencealert.com/jwst-detects-a-forbidden-signal-never-before-seen-in-the-universe-not-even-in-a-lab) · 2026-11-12 · Life
Page: https://themorning.science/story/jwst-detects-a-forbidden-signal-never-before-seen-in-the-universe-not-even-in-a-9abf85280d9fd80b
Kind: research · Impact: medium

## In brief

- JWST has reportedly detected a 'forbidden' signal that was predicted about 40 years ago.
- According to ScienceAlert, the signal has never been seen before, including in laboratory experiments.
- The source gives no further details on the measurement or its analysis.

## Why it matters

A signal predicted decades ago and now observed would test theoretical models of physics in conditions that cannot be reproduced on Earth.

## Coverage

- [JWST Detects a 'Forbidden' Signal Never Before Seen in The Universe – Not Even in a Lab](https://www.sciencealert.com/jwst-detects-a-forbidden-signal-never-before-seen-in-the-universe-not-even-in-a-lab) — ScienceAlert, 2026-11-12

Tags: jwst, astronomy, astrophysics, forbidden transitions, spectroscopy

---

Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science