- Arthropods (/ˈɑːrθrəpɒd/ ARTH-rə-pod) are invertebrates in the phylum Arthropoda. They possess an exoskeleton with a cuticle made of chitin, often mineralised with calcium carbonate, a body with differentiated (metameric) segments, and paired jointed appendages. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. They form an extremely diverse group of up to ten million species.
- Menkar (stars.astro.illinois.edu)
MENKAR (Alpha Ceti). Cetus, the Sea Monster (or Whale), appears to move backwards across the sky, his tail (illuminated by Deneb Kaitos) rising first, Menkar, at the leading (eastern) edge of his head, rising last.