Summary:
- Astronomers have mapped the true outer edge of the Sun for the first time, using data from the Interstellar Boundary Explorer (IBEX) spacecraft.
- The Sun's outer edge, known as the heliopause, is the boundary where the Sun's solar wind meets the interstellar medium. This region is important for understanding the interaction between our solar system and the rest of the galaxy.
- The new map provides a more accurate picture of the shape and location of the heliopause, which is not a simple sphere but has a complex, asymmetric structure due to the Sun's motion through the galaxy.