Random triples
| Subject | Object | 
|---|---|
| gptkb:GZK_cutoff | about 5×10^19 electronvolts | 
| gptkb:GZK_limit | ~5×10^19 eV | 
| gptkb:Zatsepin–Kuzmin_limit | ~5×10^19 eV | 
| Subject | Object | 
|---|---|
| gptkb:GZK_cutoff | about 5×10^19 electronvolts | 
| gptkb:GZK_limit | ~5×10^19 eV | 
| gptkb:Zatsepin–Kuzmin_limit | ~5×10^19 eV |