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在普及太空旅游尚需时日的今天,西班牙一家公司已经制造出一种可以上升到30多千米高空的热氦气球,目标是让人们在那里观赏地球和太空。距离地面约10千米～50千米的大气层被称为平流层,那里的空气流动比较稳定。为了安全,飞机一般会升到11千米左右的高度,抵达平流层的底端飞行。为了让人们能感受到与飞机上所看到的不一样的风景,研究人员把热氦气球的高度提升到30多千米。由于这个飞行高度是介于飞机和飞船之间,
Today, as space travel takes a long time to go by, a Spanish company has created a hot-helium balloon that can rise to more than 30 kilometers, with the goal of letting people see the earth and the sky. The atmosphere, about 10 km to 50 km above the ground, is called the stratosphere where the air flow is relatively stable. For safety, the plane will generally rise to a height of about 11 kilometers and reach the bottom of the stratosphere. To make people feel different from what they saw on the plane, the researchers raised the height of the hot helium balloon to more than 30 kilometers. As this flight altitude is between the aircraft and the spacecraft,