俄罗斯成功发射一枚“联盟-2.1a”运载火箭

Core Viewpoint - Russia successfully launched a "Soyuz-2.1a" carrier rocket, marking a significant achievement in its space exploration efforts [1] Group 1: Launch Details - The launch took place on July 3, local time, from the Baikonur Cosmodrome located in Kazakhstan [1] - The "Soyuz-2.1a" rocket carried the "Progress MS-31" cargo spacecraft, which is intended to supply the International Space Station (ISS) [1] Group 2: Mission Timeline - The cargo spacecraft will take approximately 50 hours to complete its mission, during which it will orbit the Earth 34 times [1] - The docking with the ISS is scheduled for July 6 at 00:28 Moscow time [1] Group 3: Cargo Details - The "Progress MS-31" spacecraft is set to deliver over 2.6 tons of supplies to the International Space Station [1]