该计划将让宇航员和最多8名乘客乘坐海王星号旅行，海王星号是一个绑在足球场大小的气球上的太空舱。
The plan will be for spacemen and up to eight passengers to travel in Neptune, a capsule tied to a balloon about the size of a football field.
现在海王星号面临着来自平流卫星的竞争，平流卫星是一家名为世界视野的公司开发的气球。
Now Neptune faces competition from the Stratollite, a balloon being developed by a company called World View Enterprises.
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