蓋婭：太陽來了
Gaia: Here Comes the Sun
發表日期：2024-08-04
從銀河系外返回家園會是什麼樣子？雖然歐空局的蓋亞機器人任務旨在回答更多的問題，但它的資料正在幫助人們從一個獨特的現代視角來看待人類在宇宙中的位置。 蓋亞圍繞地球附近的太陽執行，精確地分辨恆星的位置，以至於它可以從一年中不斷變化的有利位置確定輕微的偏移，對於更遙遠的恆星來說，這種偏移按比例來說會更小--從而確定距離。 在影片的第一部分，我們看到了銀河系的圖解，很快它就變成了蓋亞恆星資料的三維視覺化影像。 幾顆著名的恆星被標上了它們的俗名，而其他恆星則被標上了蓋亞星表中的數字。最終，觀眾來到了我們的恆星鄰域，蓋亞在這裡追蹤到了許多恆星，並很快看到了我們的母星太陽。在影片的最後，太陽的第三顆行星的反光變得清晰可見：地球。
原文：What would it look like to return home from outside our galaxy? Although designed to answer greater questions, data from ESA's robotic Gaia mission is helping to provide a uniquely modern perspective on humanity's place in the universe. Gaia orbits the Sun near the Earth and resolves stars' positions so precisely that it can determine a slight shift from its changing vantage point over the course of a year, a shift that is proportionately smaller for more distant stars -- and so determines distance. In the first sequence of the video, an illustration of the Milky Way is shown that soon resolves into a three-dimensional visualization of Gaia star data. A few notable stars are labelled with their common names, while others stars are labelled with numbers from a Gaia catalog. Eventually, the viewer arrives in our stellar neighborhood where many stars were tracked by Gaia, and soon at our home star Sol, the Sun. At the video's end, the reflective glow of Sol's third planet becomes visible: Earth.
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。