Extended Data Fig. 1. Comparison of the ejecta and tail morphology of Dimorphos with other objects.

(a) Deep Impact ejecta approximately one hour after impact observed by HST¹³. (b) Dimorphos ejecta approximately T+0.4 h (Fig. 2a). (c) Dimorphos ejecta approximately T+5 h (Fig. 2d). (d) Tail of P/2010 A2 observed by HST on January 29, 2010 at a distance of 1.09 au⁴ (original image by NASA, ESA, D. Jewitt (UCLA), source: https://hubblesite.org/contents/media/images/2010/07/2693-Image.html?news=true, rotated to approximate north up). (e) Dimorphos tail observed on T+5.7 days (Fig. 4h). All images are displayed with north in the up direction and east to the left.