- Kingdom: Animalia
- Phylum: Echinodermata
- Subphylum: Asterozoa
- Class: Asteroidea
- Order: Velatida
- Family: Solasteridae
- Scientific name: Crossaster papposus
- Norwegian: rød solstjerne
Like the purple sun star, the common sunstar has more than the usual five arms. Usually it has 12, sometimes as many as 16 or as few as 8. It can reach a diameter of 34 cm. The color is usually red with light ribbons on the arms.
It can be found on any depth from 10 to 1200 metres. It is most frequent on rocky or sandy substrate.
This a northern, circumpolar species, well known from the Pacific as well as the Atlantic ocean.