James Webb Spots CRISTAL-02 Shedding Gas 1 Billion Years After Big Bang
Updated
Updated · USA TODAY · Jun 23
James Webb Spots CRISTAL-02 Shedding Gas 1 Billion Years After Big Bang
3 articles · Updated · USA TODAY · Jun 23
Summary
CRISTAL-02 is ejecting gas faster than it can turn that fuel into stars, giving astronomers rare evidence that a young galaxy merger may be heading toward a shutdown in star formation.
James Webb data show a massive gas stream escaping at hundreds of miles per second from the system, seen as it existed about 1 billion years after the Big Bang.
The outflow appears to be driven mainly by merger-triggered star formation and supernova blasts, though researchers said a supermassive black hole could also be contributing.
The finding offers a window into how some early galaxies grew rapidly through collisions, then risked exhausting the gas needed to sustain that growth.
Is the universe's golden age of star birth already over because of these galactic winds?
Are 'dying' galaxies just seeding the cosmos with fuel for the next generation of stars?
What separates galaxies that 'live fast and die young' from survivors like our Milky Way?
Galaxy-Killing Winds: The Early Death of CRISTAL-02 Reveals Why Massive Galaxies Stopped Forming Stars in the Young Universe
Overview
The James Webb Space Telescope (JWST) has given scientists their first clear look into the early universe, leading to the discovery of CRISTAL-02, a galaxy system seen just 1 to 1.1 billion years after the Big Bang. In CRISTAL-02, colliding galaxies triggered an intense burst of star formation, happening at a rate three times higher than usual for similar galaxies. However, this rapid activity caused powerful galaxy-killing winds—massive storms that blasted out the cold gas needed for new stars. Without this gas, star formation stopped, showing how early galaxies could quickly 'die' after a brief, bright life.