看，南天上空的极光
A vivid aurora streams over the Earth as the International Space Station orbits 274 miles above the southern Indian Ocean in between Australia and Antarctica.
在澳大利亚和南极洲之间的南印度洋上空，国际空间站环绕274英里的轨道运行，极光在地球上空闪耀。
The station orbits the Earth in about 90 minutes. In 24 hours, the space station makes 16 orbits of Earth, traveling through 16 sunrises and sunsets.
国际空间站绕地球轨道一圈大约需要90分钟。在24小时内，空间站将绕地球运行16圈，经历16次日出和日落。
Image Credit: NASA
图片来源：美国国家航空航天局
