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関連する概念動画

Acceleration due to Gravity on Other Planets01:24

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The gravitational acceleration of an object near the Earth's surface is called the acceleration due to gravity. It can be measured by conducting simple experiments on Earth. However, such an experiment is impossible to conduct on the surface of other planets.
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Kepler's First Law of Planetary Motion01:10

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In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. He formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe.
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Kepler's Second Law of Planetary Motion01:29

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In the early 17th century, German astronomer and mathematician Johannes Kepler postulated three laws for the motion of planets in the solar system. In 1909, he formulated his first two laws based on the observations of his forebears, Nikolaus Copernicus and Tycho Brahe. However, in 1918, he published his third law of planetary motion, which gives a precise mathematical relationship between a planet's average distance from the Sun and the amount of time it takes to revolve around the Sun. It...
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ケプラーによる系外惑星科学の進歩

Jack J Lissauer1, Rebekah I Dawson2, Scott Tremaine3

  • 1NASA Ames Research Center, Moffett Field, California 94035, USA.

Nature
|September 19, 2014
PubMed
まとめ

NASAのケプラー宇宙望遠鏡は,系外惑星の発見に革命を起こし,他の恒星を周回する最も知られている惑星を特定しました. このミッションは,地球サイズの惑星とそのシステムの特徴に関する重要なデータを提供した.

科学分野:

  • 天文学 (astronomy) 天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは
  • 天体物理学 天体物理学
  • 惑星外科学とは,惑星外科学です.

背景:

  • 太陽系外の惑星を検出し,研究するために,数多くの方法と望遠鏡が使われています.
  • 太陽系外惑星の探査は,惑星の形成と居住可能性を理解することを目的として,現代天文学の重要な分野である.
  • 地球のような惑星を特定することは,地球外生命の探求の主要な目標です.

研究 の 目的:

  • NASAのケプラー宇宙望遠鏡が,系外惑星の検出における比類のない成功を強調するためです.
  • エクソプラネットの典型的な性質,特に地球にサイズと軌道が似ているものを特徴づける.
  • 銀河系における地球類似体の有病率を理解するための基礎的なデータセットを提供すること.

主な方法:

  • NASAのケプラー宇宙望遠鏡からのデータを活用して,系外惑星発見に専念したミッション.
  • 惑星が恒星の前を通る際の恒星光の弱まりを観察することによって,惑星を検出するためにトランジット光測定を用いる.
  • ケプラーの広範なデータセットを分析して,小惑星や居住可能なゾーンにある惑星に焦点を当てて,系外惑星を特定し,確認する.

主要な成果:

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  • ケプラーは,これまでに知られている系外惑星のほとんどを発見した.
  • このミッションは,通常の恒星の周りを回る多数の小惑星を特定し,地球のような惑星の可能性のあるサンプルの数を増加させました.
  • ケプラーのデータは,地球と大きさと軌道距離に匹敵する惑星の特性の最初の包括的な見解を提供します.

結論:

  • NASAのケプラー宇宙望遠鏡は,系外惑星の発見と研究において最も成功した機器である.
  • ミッションの発見は,惑星系の人口統計の理解と,他の場所で地球のような惑星の可能性を大幅に前進させました.
  • ケプラーの遺産は,小さな系外惑星とそのシステムの特徴に関する前例のない洞察を提供することにある.