2 ms·
Should we be looking at these a bit harder? https://en.wikipedia.org/wiki/Ultra-high-energy_cosmic_ray https://en.wikipedia.org/wiki/Ultra-high-energy_cosmic_r
by salty_biscuits 8y ago
Should we be looking at these a bit harder?
https://en.wikipedia.org/wiki/Ultra-high-energy_cosmic_ray https://en.wikipedia.org/wiki/Ultra-high-energy_cosmic_ray