Loading...

Glossary term: 類地行星

Description: 類地行星主要由岩石和鐵等物質構成。類地行星沒有巨型氣體行星上又氫氣和氦氣構成的蓬鬆大氣層，，而是擁有較小的大氣層或根本沒有大氣層。類地行星的質量通常小於巨行星，體積也較小。

在太陽系中，類地行星有水星、金星、地球和火星。

系外行星天文學的主要研究重點之一是尋找大小和組成類似地球的類地行星，尤其是那些位於其恆星宜居帶內的行星。

Related Terms:



See this term in other languages

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

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".

Related Media


被許多隕石坑覆蓋的水星

水星

Caption: 這張圖像是由信使號探測器（英文縮寫：MESSENGER，意譯為“水星表面、空間環境、環境化學與測距“）獲取的水星表面拼接圖像的合成圖。信使號由美國宇航局於2004年發射，並在2011年至2015年間對水星進行了探索。
Credit: 美國國家航空航天局/約翰霍普金斯大學應用物理實驗室/華盛頓卡內基研究所 credit link

License: PD Public Domain icons


The planet Venus showing white clouds enshrouding the planet

Venus in visible light

Caption: This picture taken by NASA's Mariner 10 probe shows what the planet Venus looks like when looking at it with naked eyes. Venus is enshrouded inside a thick cloudy atmosphere dominated by carbon dioxide, never revealing its hot surface.
Credit: NASA/JPL-Caltech credit link

License: PD Public Domain icons


The planet Venus' surface with ridges and valleys

Venus' surface

Caption: This image is a computer-aided rendering of the surface of the planet Venus. Since visual light cannot penetrate the thick clouds in Venus' atmosphere, the image was obtained with radio waves. NASA's space probe Megallan, launched in 1989 mapped Venus' surface between 1990 and 1994.
Credit: NASA/JPL credit link

License: PD Public Domain icons


從太空俯瞰地球，海洋和大陸一攬無餘

阿波羅 17 號觀測到的地球

Caption: 1972 年 12 月 7 日，阿波羅 17 號飛船乘員在前往月球途中拍攝的地球全景，距離約 29000 公里（18000 英里）。圖中顯示了非洲、南極洲和阿拉伯半島。
Credit: 美國國家航空航天局/阿波羅 17 號機組人員/阿波羅項目檔案館

License: PD Public Domain icons


火星表面呈鐵鏽紅色，有火山、山谷、隕石坑、冰雲和白色極冠

火星

Caption: 這張由美國宇航局火星勘測軌道飛行器於 1999 年拍攝的火星圖像顯示了火星乾燥的表面。這張照片展示了火星上最壯觀的地質區域。除了深邃的馬林里斯谷之外，我們還看到了四座火山。其中三座形成了塔西斯山脊，而奧林帕斯火山則是我們迄今為止在太陽系中發現的最大的火山。冰雲覆蓋了火星表面的部分區域。
Credit: 美國宇航局/JPL/MSSS credit link

License: PD Public Domain icons

The Office of Astronomy for Education is hosted by the Haus der Astronomie on the campus of the Max Planck Institute for Astronomy in Heidelberg. The Office of Astronomy for Education is an office of the International Astronomical Union, with substantial funding from the Klaus Tschira Foundation and the Carl Zeiss Foundation. The Shaw-IAU Workshops on Astronomy for Education
are funded by the Shaw Prize Foundation.