系外行星动物园：其他恒星
(原标题: Exoplanet Zoo: Other Stars)
2024-07-08
浏览次数: 23
其他恒星有像太阳一样的行星吗？确实如此，证据包括由绕轨道运行的系外行星的引力引起的轻微恒星摆动，以及由绕轨道运行的行星在前面移动引起的轻微恒星变暗。总的来说，目前已经发现了5500多颗系外行星，其中数千颗是由NASA的太空开普勒和TESS任务发现的，还有100多颗是由ESO的地面HARPS仪器发现的。这里有一个关于这些系外行星可能是什么样子的插图猜测。海王星类型的行星占据了中间位置，它们被染成了蓝色，因为它们可能含有蓝色散射的大气甲烷。在插图的两侧，显示了木星类型的行星，由于大气气体的散射，可能包含少量的碳，它们被涂成棕褐色和红色。其间散布着许多颜色各异的类地岩质行星。随着越来越多的系外行星被发现和研究，人类正在更好地了解类地行星的普遍程度，以及宇宙中生命的普遍程度。
查看原文解释
Do other stars have planets like our Sun? Surely they do, and evidence includes slight star wobbles created by the gravity of orbiting exoplanets and slight star dimmings caused by orbiting planets moving in front. In all, there have now been over 5,500 exoplanets discovered, including thousands by NASA's space-based Kepler and TESS missions, and over 100 by ESO's ground-based HARPS instrument. Featured here is an illustrated guess as to what some of these exoplanets might look like. Neptune-type planets occupy the middle and are colored blue because of blue-scattering atmospheric methane they might contain. On the sides of the illustration, Jupiter-type planets are shown, colored tan and red from the scatterings of atmospheric gases that likely include small amounts of carbon. Interspersed are many Earth-type rocky planets of many colors. As more exoplanets are discovered and investigated, humanity is developing a better understanding of how common Earth-like planets are, and how common life might be in the universe.
© Martin Vargic, Halcyon Maps