Taln's Scar is a celestial object visible from Roshar and is one of the most striking features in Roshar's night sky. It is a swatch of stars that glow a deep red in contrast to the twinkling white stars across the rest of the sky. Its position on one's seventh birthday is relevant in Rosharan astrology.
”The crimson eyes hovered like Taln's Scar - like spheres in the darkness, deeper in color than any ruby.— A description of Stormform Parshendi eyes 
It has yet to be reviewed.