High Energy2026-07-173 minarXiv:2607.15797A Crack in the Disk: How Westerlund 1 Opens a Path for Cosmic RaysFifteen years of observations by the Gamma radiation telescope Fermi have revealed a crack in the floor of the Galaxy.Marianne Lemoine-Goumard·Lucia Härer·Lars Mohrmann·Romain Bernet·Jim Hinton·Giada Peron·Brian Reville·Luigi Tibaldo·Thibault VieuFermi accelerationEnrico FermiAlbert EinsteinAlan Guthtopological defectinterstellar mediumgalactic evolutionstellar evolutioncosmic rays👍👎☆SimplePopularAdvanced