Perseus-Taurus Shell
The Perseus-Taurus Shell is a near-spherical cavity in the interstellar medium, 500 light-years wide, located in the Perseus-Taurus constellations.
A team from the Harvard Smithsonian Center for Astrophysics led by Catherine Zucker and Shmuel Bialy discovered the structure in 2021. Scientists believe that it appeared
following the explosions of ancient supernovae.
Molecular clouds surround the sphere-shape cavity.