China launches mystery satellite. China launched a new communications satellite toward geostationary orbit Thursday, although its precise role remains undisclosed​, Space News reports. The satellite lifted off aboard a Long March 3B rocket, and China's leading state-owned aerospace contractor identified the payload as High orbit internet satellite-03 (Weixing Hulianwan Gaogui-03). This is the third satellite in this series, following launches in February and August. The lack of publicly available information raises speculation about its potential uses, which could include military applications.

Shortfall ... This was China's 47th space launch of the year, well short of the 100 missions Chinese officials originally projected for 2024. This launch rate is on pace to come close to China's numbers the last three years. Around 30 of these 100 projected launches were supposed to be with rockets from Chinese commercial startups. China's commercial launch industry encountered a setback in June, when a rocket broke free of its restraints during a first stage static fire test, sending the fully fueled booster on an uncontrolled flight near populated areas before a fiery crash to the ground.

Vulcan's second flight was successful but not perfect. United Launch Alliance's Vulcan rocket, under contract for dozens of flights for the US military and Amazon's Kuiper broadband network, lifted off from Florida on its second test flight October 4, suffered an anomaly with one of its strap-on boosters, and still achieved a successful mission, Ars reports. This test flight, known as Cert-2, was the second certification mission for the new Vulcan rocket, a milestone that paves the way for the Space Force to clear ULA's new rocket to begin launching national security satellites in the coming months.

Anomalous plume … What happened 37 seconds after launch was startling and impressive. The exhaust nozzle from one of Vulcan's two strap-on solid rocket boosters failed and fell off the vehicle, creating a shower of sparks and debris. The launcher visibly tilted along its axis due to asymmetrical thrust from the twin boosters, but Vulcan's guidance system corrected its trajectory, and the rocket's BE-4 engines vectored their exhaust to keep the rocket on course. The engines burned somewhat longer than planned to make up for the shortfall in power from the damaged booster, and the rocket still reached its target orbit. However, ULA and Northrop Grumman, the booster manufacturer, must determine what happened with the nozzle before Vulcan can fly again. (submitted by Ken the Bin)