"天问一号"第2次轨道修正
Mars probe makes course correction China's Tianwen 1 Mars probe carried out its second midcourse correction maneuver on Sunday night, according to the China National Space Administration. The robotic spacecraft ran its four 120-Newton thrusters for 20 seconds at around 11 pm after receiving control signals from its ground controllers, the administration said in a statement on Monday morning. By Monday morning, Tianwen 1 had traveled 160 million kilometers in an Earth-Mars transfer trajectory toward the red planet and was nearly 19 million km from Earth, it added. China launched Tianwen 1, the country's first independent Mars mission, on July 23 at the Wenchang Space Launch Center in Hainan province, opening the nation's planetary exploration program. |