Colin Stuart 🔭 @colinstuartspace.bsky.social · 14/03/2026You can calculate it. The particle’s energy was measured as ~ 3.2 x 10^20 eV. If it was a proton, that’s a Lorentz factor of ~ 3.41 x 10^11 1.5 billion / 3.41 x 10^11 = 0.0044 years (or ~ 1.6 days) 000
