Recent studies utilizing NASA's Surface Water and Ocean Topography (SWOT) satellite have provided unprecedented high-resolution images of a major Pacific tsunami triggered by a magnitude 8.8 earthquake off the Kuril-Kamchatka Peninsula on July 29, 2025. This event, the sixth-largest earthquake recorded since 1900, generated complex wave patterns that challenged traditional models assuming non-dispersive tsunami behavior. SWOT's capability to capture detailed swaths of ocean surface data—up to 120 kilometers wide—allowed scientists to observe the tsunami's intricate wave interactions, dispersive features, and the influence of bathymetry on wave splitting and scattering. The satellite data, combined with DART buoy measurements, revealed that large tsunamis may contain significant dispersive energy, affecting wave propagation and coastal impact predictions. The findings suggest that existing tsunami models need refinement to incorporate these complex wave behaviors, potentially improving early warning systems and hazard assessments. The study also revised the earthquake rupture length to 400 kilometers, longer than previously predicted, providing new insights into earthquake and tsunami dynamics. Overall, these observations mark a significant advancement in understanding tsunami physics and demonstrate the vital role of space-based monitoring in disaster preparedness.