Six large silver spheres wash up on Forrest Beach near Townsville and officials secure five in drums and render a sixth safe while establishing a 50m exclusion zone.The Australian Space Agency and police are investigating the origin; Associate Professor Alice Gorman says footage suggests the objects could be titanium alloy pressurized fuel vessels from rocket stages such as a Russian Fregat and that they can sometimes retain hydrazine.Authorities place the objects in hazmat barrels, warn the public not to touch them, and say the agency and the national emergency agency are collaborating and that more fragments may appear along the coast following recent increased launch activity.