James Webb Solves Pablo’s Galaxy Mystery: Black Hole Caused Slow Starvation

• The James Webb Space Telescope and ALMA uncovered the demise of Pablo’s Galaxy (GS-10578), a massive, distant galaxy.
• Scientists determined the galaxy was slowly starved to death by its central supermassive black hole, a process dubbed 'death by a thousand cuts'.
• Pablo’s Galaxy, existing 3 billion years after the Big Bang, stopped forming stars around 400 million years ago, despite its peak star-forming activity.
• ALMA detected virtually no carbon monoxide, indicating the galaxy was stripped of star-forming gas, pointing to slow starvation.
• The black hole repeatedly pushed gas outward at extreme speeds, draining the galaxy's reserves over time without a violent collision.

Why It Matters: James Webb and ALMA revealed Pablo’s Galaxy died from slow starvation by its black hole, not a dramatic event.