您好:China will launch its third manned spacecraft Shenzhou-7 from Jiuquan Satellite Launch Center in northwest China on Thursday,a spokesperson with China's manned space program said on Wednesday.The first Chinese astronaut is likely to walk in space around 4:30 pm on Friday,a day after spacecraft Shenzhou VII lifts off,the commander-in-chief of the mission's ground operation has said.The historic moment will be broadcast live across the world,and the space environment is expected to be fine for the mission.The Shenzhou-7,carrying three taikonauts,will be launched on a Long-March II-F carrier rocket and then moved into orbit at an altitude of 343 kilometers.希望对您的学习有帮助【满意请采纳】O(∩_∩)O谢谢欢迎追问O(∩_∩)O~祝学习进步~