AI Insight
New observations of the Helix Nebula reveal that the central dying star expelled material in a clumpy wind rather than a uniform outflow before its death. These clumps of gas are now being observed as they disperse and dissolve into the interstellar medium. The images provide direct evidence of the irregular mass-loss processes that occur during late-stage stellar evolution.
Why it matters
This discovery improves our understanding of how dying stars return processed material to the interstellar medium, which eventually forms new stars and planetary systems. The clumpy nature of the wind challenges simplified models of stellar mass loss and provides insights into the complex physical processes occurring in the final stages of solar-mass stars.
Understand the Science
The star at the heart of the oft-observed Helix Nebula powered a clumpy wind before it died. Now, new images capture these clumps’ dissolution into the space between stars.
The post The Helix Nebula is Hurling Clumps of Gas through Space appeared first on Sky & Telescope.
Source: The Helix Nebula is Hurling Clumps of Gas through Space