"거주 가능": 연구자들은 새로운 외계 행성을 발견합니다. > cosmos

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"거주 가능": 연구자들은 새로운 외계 행성을 발견합니다.

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댓글 2건 조회 6,714회 작성일 24-08-10 12:06

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우주 구름 앞의 외계 행성

미국 항공우주국(NASA)은 최근 외계행성 글리제 12호(Gliese 12 b)를 발견했다고 발표했다. 이 슈퍼 지구는 우리로부터 약 40광년 떨어져 있으며 M형의 적색 왜성 주위를 공전합니다. 질량이 지구의 3.87배인 글리제 12 b는 별의 거주 가능 영역에 있기 때문에 특히 주목할 만합니다.

글리제 12 b: 외계행성은 "특히 매혹적이다"

연구자들은 액체 상태의 물이나 심지어 지구와 같은 대기가 있다고 의심되는 천체를 계속해서 발견합니다. 많은 경우 더 자세한 조사가 아직 보류 중이며, 다른 경우에는 그 반대입니다. 그러나 현재의 경우를 더욱 흥미롭게 만드는 것은 외계행성의 특별한 특성과 그 위치입니다.

„Was Gliese 12 b besonders faszinierend macht, ist seine Größe und Lage“, erklärten die beiden Postdoc-Forscher Vigneshwaran Krishnamurthy und Hiroyuki Tako Ishikawa von den Universitäten McGill und Western. „Er hat ungefähr die gleiche Größe wie die Erde, was darauf schließen lässt, dass er eine ähnliche Beschaffenheit und Oberflächenumgebung hat. Um dies zu bestätigen, sind jedoch weitere Beobachtungen und Modellierungen erforderlich.“

Ebenfalls vielversprechend ist die Tatsache, dass der Exoplanet mit Gliese 12 einen sehr ungewöhnlichen Roten Zwerg umkreist – neben TRAPPIST-1 einen von zwei Typ-M-Sternen in einem 100 Lichtjahre großen Umkreis zur Erde. Diese Klasse von Sternen ist kleiner und leichter als Typ-G-Sterne wie die Sonne. Das Ungewöhnliche an Gliese 12 ist seine Inaktivität. Denn während Rote Zwerge normalerweise in hoher Frequenz starke Flares und Eruptionen ausstoßen, bietet dieser den Planeten, die ihn umkreisen, ein weit freundlicheres Umfeld.

Auch interessant: Neue Erde entdeckt? Forscher vermuten Doppelgänger unseres Planeten

„Aufregende Entwicklung“
Aus Sicht der beiden Postdoc-Forscher stellt die Entdeckung des Exoplaneten einen wichtigen Schritt auf dem Weg zur Suche nach bewohnbaren Planeten dar – und damit auch nach außerirdischem Leben. Leistungsfähige Teleskope wie das James-Webb-Weltraumteleskop (JWST) und dessen potenzielle Nachfolger ermöglichen es Forschenden, die Oberflächen und Atmosphären solcher Himmelskörper genauer zu untersuchen.

"인근에 잠재적으로 거주 가능한 외계행성인 글리제 12 b의 발견은 지구와 같은 행성과 외계 생명체를 찾는 데 있어 흥미로운 발전입니다. 우리가 우주를 계속 탐험하면서 새로운 발견을 할 때마다 우리는 우주에 혼자인가라는 오래된 질문에 대한 답에 더 가까워집니다."

Vigneshwaran Krishnamurthy 및 Hiroyuki Tako Ishikawa (The Conversation을 통해)
Quelle: The Conversation

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