Von Bengtson's goal is to launch a manned rocket into space by 2020.

本斯顿的目标是2020年之前发射人造火箭到太空。

But NASA is testing it again, in the hopes that it will power future manned rocket missions to places like Mars.

但NASA正再次对其进行测试，希望它能成为太空发射任务的火箭引擎，最终将人类送上火星。