问题详情

What is the "seven minutes of terror" according to NASA engineers？
A．Rover"s signals will delay seven minutes to travel to Earth from Mars.
B．Engineers won"t be able to control or witness the Mars rover"s seven minutes" soft landing.
C．The Mars rover needs seven minutes to increase speed for landing.
D．Curiosity will be lowered to the Martian surface on cables in seven minutes.请帮忙给出正确答案和分析，谢谢！