Colliding Gas in the Helix Nebula

Depicts: Helix Nebula, NGC 7293, IRAS 22267-2102
Copyright: Robert O'Dell, Kerry P. Handron (Rice University, Houston, Texas) and NASA
Astronomers have dubbed the tadpole-like objects in the upper right-hand corner "cometary knots" because their glowing heads and gossamer tails resemble comets.
Last Update: 1 September 2019