Euclid's first images: the dazzling edge of darkness

Looking forward to at least half an hour on this from DR Becky. I'm very curious about the specifics of how they plan on detecting all this dark stuff.

The image shows 1000 galaxies belonging to the Perseus Cluster, and more than 100 000 additional galaxies further away in the background.

GALAXIES! It can see this many GALAXIES. This is mind boggling.