Glossary term: 外星智能
Description: 外星智能指地球外可能存在的其他智慧實體。
對地外智慧生命的搜尋包括尋找無線電或其他信號，但目前的研究主要集中在研究地球以外是否存在產生智慧生命的條件。根據現有證據，地球上出現生命的必要條件應該存在於我們銀河系內外的許多其他行星上，這些條件包括：一顆固體行星，與恆星保持一定距離以保證行星表面可以存在液態水、碳和氧等原子，以及更復雜分子。因此，有理由假設至少在其中一些行星上可能已經出現了智慧生命，這並不是一個不合理的假設，儘管我們沒有確鑿的依據來估計這種情況發生的概率。
作為搜索地外智慧生命（SETI）計劃的一個課題，一些天文學家已經開始使用無線電信號來搜索外星智能的信息。光速是一個基本的物理極限，導致我們星際旅行需要很長時間，從而限制了我們與外星智能直接接觸的能力。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
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In Other Languages
- 阿拉伯語: ذكاء من خارج الأرض
- 德語: Extraterrestrische Intelligenz
- 英語: Extraterrestrial Intelligence
- 法語: Intelligence extraterrestre
- 義大利語: Intelligenza extraterrestre
- 巴西葡萄牙語: Inteligência extraterrestre
- 簡體中文: 外星智能
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Caption: 這張圖片展示的是名為"阿雷西博信息"的星際無線電訊號示意圖。在這幅圖像中，不同部分以色彩區分。該信息於1974年11月16日從波多黎各的阿雷西博射電望遠鏡發射。在當時，這是全球最大的射電望遠鏡。訊號目的地是武仙座的球狀星團M13。它是它這一類別中最明亮的星團之一，包含約50萬顆恆星，距離地球約2.5萬光年。因為M13恆星密集度高，也就是說訊號能抵達更多恆星及可能存在的行星，科學家選擇了它作為目標。此外，在發射當時當地可見的球狀星團中，M13屬於相對較近的天體。
阿雷西博信息是一次象徵性活動，旨在證明人類具備向星際發送訊號的能力。這條包含1679個數據位（該數字是兩個質數的乘積）的訊號，經二維矩陣排列後形成了圖示畫面。信息由七個部分組成，呈現了DNA雙螺旋結構、人類形態、地球及太陽系的相關數據。訊號內容由康奈爾大學與阿雷西博天文臺的科學家團隊共同設計。
Credit: Arne Nordmann（維基共享資源用戶 norro）
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License: CC-BY-SA-3.0 Creative Commons Attribution-ShareAlike 3.0 Unported icons
Pioneer Plaques
Caption: The Pioneer 10 and 11 spacecraft are the first human-made objects to leave the solar system and venture into interstellar space. To inform potentially intelligent species about our existence, they both carry small metal plaques identifying their time, place of origin and information about their builders. They provide the location of our solar system in the Milky Way by depicting the Solar System's position relative to 14 pulsars, with radiating lines that include information about their frequencies. A model of a hydrogen atom undergoing one particular atomic transition is depicted. The wavelength and frequency of this transition are used to express sizes and frequencies of the other items shown in the plaque. A more detailed view of Earth's position in the solar system, with the spacecraft's trajectory moving away from Earth, passing Mars and Jupiter is displayed at the bottom. The plaque also depicts a naked man and woman alongside the spacecraft to provide a sense of scale. The man’s hand is raised as a friendly gesture.
The 6-inch by 9-inch gold-anodized aluminum plate has the design engraved on it. It was attached to the support struts of the spacecraft's antenna to try to to protect it from erosion by any interstellar dust the spacecraft may encounter on its journey. Designed by Carl Sagan and Frank Drake, with artwork by Linda Salzman Sagan, these plaques are meant to communicate the origin of the spacecraft to any extraterrestrial life that might encounter them.
While Pioneer 10 is on a course towards the star Aldebaran in the Taurus constellation, which will take about two million years to reach, Pioneer 11 is heading in a different direction towards the constellation of Aquila. It will take approximately four million years to pass close to some of the constellation’s stars.
Credit: NASA Ames
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License: PD Public Domain icons
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License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
Age Ranges:
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Education Level:
Middle School
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Areas of Learning:
Debate
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Costs:
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Duration:
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Group Size:
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Skills:
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