标签: 系外行星

NASA的的詹姆斯·韦伯太空望远镜研究遥远世界的永恒日出和日落

利用NASA的詹姆斯·韦伯太空望远镜,研究人员终于证实了之前模型预测的结果:一颗系外行星的早晚大气存在差异。WASP-39 b是一颗巨大的行星,其直径比木星大1.3倍,但质量与土星相似,围绕距离地球约700光年的一颗恒星运行。这颗行星受到潮汐锁定,这意味着它拥有一个恒定的昼面和一个恒定的夜面——行星的一侧始终暴露在其恒星之下,而另一侧则始终笼罩在黑暗中。

毕宿一: 有行星的恒星

2024年1月26日 Epsilon Tauri: Star with Planet Image Credit & Copyright: Reg Pratt Explanation: Epsilon Tauri lies 146 light-years away. A K-type red giant star, epsilon Tau is cooler than the Sun, but with about 13 times the solar radius it has nearly 100 times the solar luminosity. A member of the Hyades open star cluster the giant star is known by the pro...

在遥远的系外行星发现了甲烷

2023年9月20日 Methane Discovered on Distant Exoplanet Illustration Credit: Ahmad Jabakenji (ASU Lebanon, North Star Space Art); Data: NASA, ESA, CSA, JWST Explanation: Where else might life exist? One of humanity’s great outstanding questions, locating planets where extrasolar life might survive took a step forward in 2019 with the discovery of a signific...

恒星吞噬行星

2023年6月6日 Star Eats Planet Illustrative Video Credit: K. Miller & R. Hurt (Caltech, IPAC) Explanation: It’s the end of a world as we know it. Specifically, the Sun-like star ZTF SLRN-2020 was seen eating one of its own planets. Although many a planet eventually dies by spiraling into their central star, the 2020 event, involving a Jupiter-like planet, w...