AKARI's Far-Infrared Surveyor (FIS) instrument imaged Betelgeuse and its surroundings
The three colour composite image of Betelgeuse and surrounding composed from images at 65 (Blue), 90 (Green) and 140 (Red) micrometers taken by the AKARI's Far-Infrared Surveyor (FIS). The arc-like structure in the upper left direction from the star is the bow shock due to collision of stellar wind and the interstellar matter in the direction of star's motion (from lower left to upper right). The diameter of the bow shock is about three light years. The blue-white linear structure from lower right to upper left through the star is due to an instrumental effect.