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天文和航天是当代科技的重要组成部分,与科技进步、人类发展密切相关。我们还可以想得更遥远些。据天文研究初步证明,几十亿年后太阳光度将达到现在的1万倍,太阳表面将扩大到接近地球现在的轨道球面,那时地球上的水将被蒸发光,人类将无法生存,而不得不移居到别的星球上,如火星。由于未来10亿年里太阳光度将增加20％,火星上将有液态水,
Astronomy and space are an important part of contemporary science and technology and are closely related to scientific and technological progress and human development. We can think farther and farther. Astronomical research has tentatively proved that after several billion years the solar intensity will reach 10,000 times the present level, and the solar surface will be expanded close to the Earth’s present orbit sphere, when the earth’s water will be evaporated and human beings will not be able to survive Had to move to other planets, such as Mars. As the sun’s brightness will increase by 20% in the next billion years, Mars will have liquid water,