when was the Hubble telescope launched into space?请问为什么用was来提问,而不是用does

题目

when was the Hubble telescope launched into space?请问为什么用was来提问,而不是用does
来提问,发射是动作,不应该是do一类的词来提问吗,

答案

被动语态啦!
哈勃望远镜实在过去被放在太空的.