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[National Geographic系列]：火星上的生命（NG）Life on Mars (NG)-1080P高清迅雷网盘下载
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由Liam Shannon主持并由《国家地理》作为NG的一部分出版的科学纪录片，它是真的吗？2006年丛书-英文旁白Science Documentary hosted by Liam Shannon and published by National Geographic as part of NG Is it Real? Series in 2006 - English narration
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只要我们将目光投向太空，我们就梦想着有一天能在另一个星球上找到生命。科学家认为，火星可能是我们拥有生命的太阳系中的行星。但是火星上真的有生命吗？加入国家地理频道，采访顶尖行星科学家和业余研究人员，他们一生致力于研究这个主题，并从幻想的飞行中分离出科学证据。早期推测火星的极地冰盖最早可追溯到17世纪中叶，在18世纪下半叶，威廉·赫歇尔（William Herschel）首先证明了在每个半球的夏季和冬季交替交替生长和收缩。到19世纪中叶，天文学家知道火星与地球还有其他相似之处，例如，火星上一天的长度几乎与地球上一天的长度相同。他们还知道它的轴向倾斜度与地球相似，这意味着它经历了与地球相同的季节-但由于其更长的一年，其长度几乎翻了一番。这些观察结果促使人们推测，较暗的反照率特征是水，而较亮的反照率特征是土地。因此很自然地认为火星可能生活在某种形式的生命中。自维京海盗直接测试了火星土壤的生命迹象以来，火星上没有探测器。美国宇航局最近的任务集中在另一个问题上：火星在古代是否在其表面上保留着湖泊或液态水海洋。科学家发现了赤铁矿，一种在水存在下形成的矿物。长期以来，许多科学家一直认为这是不言而喻的，基于地球上各种地质地形，尽管对早期维京人图像的分析表明，脸部特征可能不是观看条件的偶然结果[1]，但今天，人们通常将其理解为视错觉，即轻视症的一个例子。在分析了更高分辨率的火星全球测量师数据后，美国宇航局表示：“对该特征的多张图像进行的详细分析显示，看起来自然的火星山丘，其虚幻的类脸外观取决于视角和照明角度” [2]。地球上的类似特征是荒地守护者地质特征，类似于戴美国原住民头巾的人的头[3]。更多关于火星的生活更多关于赛多尼亚和“火星上的面孔”的信息也请阅读关于霍格兰和其他“坏天文学”的信息?通常将其理解为视错觉，pareidolia的一个例子。在分析了更高分辨率的火星全球测量师数据后，美国宇航局表示：“对该特征的多张图像进行的详细分析显示，看起来自然的火星山丘，其虚幻的类脸外观取决于视角和照明角度” [2]。地球上的类似特征是荒地守护者地质特征，类似于戴美国原住民头巾的人的头[3]。更多关于火星的生活更多关于赛多尼亚和“火星上的面孔”的信息也请阅读关于霍格兰和其他“坏天文学”的信息?通常将其理解为视错觉，pareidolia的一个例子。在分析了更高分辨率的火星全球测量师数据后，美国宇航局表示：“对该特征的多张图像进行的详细分析显示，看起来自然的火星山丘，其虚幻的类脸外观取决于视角和照明角度” [2]。地球上的类似特征是荒地守护者地质特征，类似于戴美国原住民头巾的人的头[3]。更多关于火星的生活更多关于赛多尼亚和“火星上的面孔”的信息也请阅读关于霍格兰和其他“坏天文学”的信息As long as we have lifted eyes into space, we have dreamed one day finding life on another planet. Scientists believe Mars may be the planet in our solar system that has life. But could there really be life on Mars? Join the National Geographic Channel as they interview top planetary scientists and amateur researchers, who have dedicated their lives to the subject and separate scientific evidence from flights of fancy.Early speculationMars's polar ice caps were observed as early as the mid-17th century, and they were first proven to grow and shrink alternately, in the summer and winter of each hemisphere, by William Herschel in the latter part of the 18th century. By the mid-19th century, astronomers knew that Mars had certain other similarities to Earth, for example that the length of a day on Mars was almost the same as a day on Earth. They also knew that its axial tilt was similar to Earth's, which meant it experienced seasons just as Earth does - but of nearly double the length owing to its much longer year. These observations led to the increase in speculation that the darker albedo features were water, and brighter ones were land. It was therefore natural to suppose that Mars may be inhabited by some form of life.Liquid water on MarsNo Mars probe since Viking has tested the Martian soil directly for signs of life. NASA's recent missions have focused on another question: whether Mars held lakes or oceans of liquid water on its surface in the ancient past. Scientists have found hematite, a mineral that forms in the presence of water. Many scientists have long held this to be almost self-evident based on various geological landforms on the planet, but others have proposed different explanations—wind erosion, carbon dioxide oceans, etc. Thus, the mission of the Mars Exploration Rovers of 2004 was not to look for present or past life, but for evidence of liquid water on the surface of Mars in the planet's ancient past.The Face on MarsOne of the Cydonian mesas, situated at 40°45' north latitude and 9°26' west longitude, took on the striking appearance of a humanoid Face on Mars in a photo taken by Viking 1 on July 25, 1976. Some commentators, most notably Richard C. Hoagland, believe it to be evidence of a long-lost Martian civilization along with other features they believe are present, such as apparent pyramids, which they argue are part of a ruined city. While analysis of the early Viking images suggested that the features of the Face might not be an accidental consequence of viewing conditions[1], today, it is generally understood to be an optical illusion, an example of pareidolia. After analysis of the higher resolution Mars Global Surveyor data NASA stated that "a detailed analysis of multiple images of this feature reveals a natural looking Martian hill whose illusory face-like appearance depends on the viewing angle and angle of illumination"[2]. A similar feature on Earth is the Badlands Guardian Geological Feature, which resembles a human head wearing a Native American headress[3].More about Life on MarsMore about Cydonia and "Face On Mars"Read also about Hoagland and other "Bad Astronomy"
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【技术参数】——
视频编码: DX50
比特率: 2020 kbps
Video 分辨率: 432x688 (height x width)
Video 画面比例: 3x5 (1:1,59)
音频编码: MPEG-1 Layer 3 (MP3) <0x0055>
音频比特率: 192 kbps
音频串流: 1
音频语言: English
分集时长: 46 min 58,92 s (70473 Frames)
Subtitles: English
发布人：: jvt40【Technical Specs】——
Video Codec: DX50
Video Bitrate: 2020 kbps
Video Resolution: 432x688 (height x width)
Video Aspect Ratio: 3x5 (1:1,59)
Audio Codec: MPEG-1 Layer 3 (MP3) <0x0055>
Audio BitRate: 192 kbps
Audio Streams: 1
Audio Languages: English
RunTime: 46 min 58,92 s (70473 Frames)
Subtitles: English
Ripped by: jvt40
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发表于 2020-7-13 23:28:53
发表于 2020-9-11 03:01:54