[Image description: Two interacting galaxies known as Arp 142. At left is NGC 2937, nicknamed the Egg for its appearance. At right is NGC 2936, nicknamed the Penguin for its appearance. The latter’s beak-like region points toward and above the Egg.]
I can see why they called it that, but it's a little bit of a stretch for me and I'm not sure why we have to base everything on 'relatable' things anyway, let's just enjoy it for what it is: beautiful.