Spectacular three-way interaction

https://www.legacysurvey.org//viewer/?ra=241.6309&dec=56.3203&layer=hsc-dr2&zoom=12

This looks like a triplet version of the mice galaxies!!

Really nice. What about the faint red trail at about h 10 in Legacy Surveys DR9 images from 241.6600, 56.3259 to 241.6524, 56.3220 ? Cosmic ray?

Yup, cosmics.

Thanks for your answer dstn!

Are you sure? There are definitely cosmic ray traces visible in the image as little red squiggles, but these two are dead straight and quite closely aligned, very similar to the others that were discussed some weeks back. You know what I think they are! :grimacing:

Cosmics come in lots of shapes and sizes - depends on what kind of particle, their energy and geometry