天体生物学是研究宇宙生命起源，演化，分布和未来的学科。

Astrobiology is the study of the origin, evolution, distribution and future of life in the universe.

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后来，在八、九年级的时候，我在学习天文学，宇宙学和宇宙的起源。

Then, in eighth or ninth grade, I studied astronomy, cosmology, and the origins of the universe.

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68岁的霍金凭借他1988年出版的《时间简史》一书在全球声名鹊起。《时间简史》讲述了宇宙的起源，该书以霍金在黑洞理论、宇宙学和量子引力方面的研究而著称。

Hawking, 68, who won global recognition with his 1988 book "a Brief History of Time," an account of the origins of the universe, is renowned for his work on black holes, cosmology and quantum gravity.

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