Principium 49 - Contents Novel TechnosignaturesAerographite: A Candidate Material for Interstellar Photon SailingThe Interstellar Coracle at the NIAC Symposium in PasadenaInterstellar NewsBreakthrough Discuss 2025IAC24-The Interstellar Presentations Part 3The JournalsBecome a memberMembers pageNext issueCover images