James Webb Space Telescope Reveals Curious Cometary Knots in the Helix Nebula

A fascinating image of a section of the Helix Nebula, captured by the James Webb Space Telescope (JWST) in infrared light, reveals unusual and highly detailed 'cometary knots' of gas and dust. The existence and origins of these knots, also observed in other planetary nebulas, are not yet well understood, prompting further study into the end-of-life processes of Sun-like stars.