Joel Osterhus, Abby Proskurniak, and Victoria Kelly (other contributors: Jonathan Bauzon, Samantha Krusza, Zeke Montemayor) presented a poster “Spectral Signatures of Silicate Clusters in Planetary Nebulae” at the Valparaiso University Symposium on Research and Creative Expression (SORCE) 2026 on VU campus, April 30, 2026.