how many years will have to pass---scientists succeed in pro

这就是英语语言啊
人家就这么用
最主要的还是这个句子是将来式,而且before引导的从句用的是suceed
It will be five years before we meet again.
五年以后我们才能再见----来自牛津辞典
=We shall not meet again until five years from now.
可见,这里如果使用until,是不合适的