太空探索的英文怎么说

太空探索的英文：
outerspace exploration

It's difficult to quantify the value of space exploration.
把太空探索的价值进行量化是很困难的。

It 's difficult to quantify the value of space exploration .
把太空探索的价值进行量化是很困难的。

Men venture their lives in space exploration.
人们冒着生命危险从事太空探索。

Is this really the case? What has the space exploration done to relieve the suffering of the earth's starving millions?
情况真的如此吗？太空探索对减轻地球上正在挨饿的千百万人的痛苦到底做了什么呢

Investigation is exploring.
调查就是探索。

The explorers discovered a natural deposit.
探险者们发现了一处天然矿床。

Explorers have to withstand hardships.
探险者得忍受艰苦。

He was a great explorer.
他是一位伟大的探险家。

He likes to explore the cave.
他喜欢在山洞里探险。