2 papers
astro-ph.EP2026
Radar and Infrasound Observations of the 2026 May 30 Cape Cod Bay Superbolide
Juha Vierinen, Ryan Volz, Marc Fries +10
Metre-scale impactors connect near-Earth-object dynamics, atmospheric-entry physics and meteorite delivery, but their pre-impact orbits and material properties are rarely measured…
physics.space-ph2026
Optical and Radar Observations of the February 2025 Falcon 9 Upper-Stage Re-entry
Juha Vierinen, Dabrowka Knach, Jorge L. Chau +9
We investigate the February 19, 2025, re-entry of a Falcon 9 upper stage using optical observations from 43 meteor cameras across central Europe together with radar detections of r…