Jutzzi 《47:V:25》 on Gab: "Comet Leonard had spent the last 40.000 years inbound from approximately 3,700 AU (550 billion km)...40.000 bce Advanced darts and harpoons appear in this perio..."

Jutzzi 《47:V:25》 on Gab: "Comet Leonard had spent the last 40.000 years inbound from approximately 3,700 AU (550 billion km)...40.000 bce Advanced darts and harpoons appear in this perio..."