Description
天文学家卡尔·萨根1996年在他的最后一次采访中宣称:“我们生活在一颗围绕着单调恒星公转的金属岩石上。”这是对地球的简单描述，但在很长一段时间里，许多科学家都会赞同它。我们没有办法直接探索我们星球的内部；有史以来最深的钻孔，俄罗斯北极地区的科拉深钻孔，仅到达我们与地心距离的0.2%。因此，即使是最好的科学地图看起来也不比你中学仅展示了一个外壳，一个内核和中间叫做地幔的三层结构的教科书漫画好多少。
Audio
Featured in this Episode
No persons identified in this episode.
Transcription
This episode hasn't been transcribed yet
Help us prioritize this episode for transcription by upvoting it.
0
upvotes
Popular episodes get transcribed faster
Other recent transcribed episodes
Transcribed and ready to explore now
Eric Larsen on the emergence and potential of AI in healthcare
10 Dec 2025
McKinsey on Healthcare
Reducing Burnout and Boosting Revenue in ASCs
10 Dec 2025
Becker’s Healthcare -- Spine and Orthopedic Podcast
Dr. Erich G. Anderer, Chief of the Division of Neurosurgery and Surgical Director of Perioperative Services at NYU Langone Hospital–Brooklyn
09 Dec 2025
Becker’s Healthcare -- Spine and Orthopedic Podcast
Dr. Nolan Wessell, Assistant Professor and Well-being Co-Director, Department of Orthopedic Surgery, Division of Spine Surgery, University of Colorado School of Medicine
08 Dec 2025
Becker’s Healthcare -- Spine and Orthopedic Podcast
NPR News: 12-08-2025 2AM EST
08 Dec 2025
NPR News Now
NPR News: 12-08-2025 1AM EST
08 Dec 2025
NPR News Now