To test speculation that these seas hold life, ESA and NASA have together started preliminary development of the Europa Jupiter System Mission , a spacecraft proposed to better study Europa.

• 为了验证这些海洋里存在生命的假设，欧空局和NASA已经一起开始了初步开发木卫二探测器，一艘围绕木卫二飞行的宇宙飞船。