Hidden Interstellar Tunnels Map a Dynamic Milky Way

Using the eROSITA observatory, astronomers have mapped interstellar tunnels—hot-gas corridors formed by past supernovae—that link distant regions across the Milky Way. This reveals a dynamic 3D network in interstellar space and has implications for how matter and energy flow, cosmic ray propagation, and star formation occur, with our Sun residing in the Local Hot Bubble.