Hey WorldSolar system field guide · 太陽系行星指南
太陽系有八大行星，依離太陽由近到遠排列：水星、金星、地球、火星、木星、土星、天王星、海王星。前四顆是岩質行星；木星與土星是氣體巨星，天王星與海王星是冰巨星。
The solar system has eight planets. In order from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The first four are rocky terrestrial planets; Jupiter and Saturn are gas giants, and Uranus and Neptune are ice giants.
開始行星旅行 · Launch the experience ↗公轉週期是一顆行星繞太陽一圈所需的時間，與自轉一圈的「一天」不同。以下以地球日或地球年表示；數字為近似值。
An orbital period is the time a planet takes to travel once around the Sun, not the length of its day. Values below are approximate, expressed in Earth days or Earth years.
| 順序Order | 行星Planet | 分類Type | 一年Orbital period |
|---|---|---|---|
| 1 | 水星 Mercury | 岩質行星Terrestrial planet | 88 個地球日88 Earth days |
| 2 | 金星 Venus | 岩質行星Terrestrial planet | 225 個地球日225 Earth days |
| 3 | 地球 Earth | 岩質行星Terrestrial planet | 365.25 個地球日365.25 Earth days |
| 4 | 火星 Mars | 岩質行星Terrestrial planet | 687 個地球日687 Earth days |
| 5 | 木星 Jupiter | 氣體巨星Gas giant | 約 12 個地球年About 12 Earth years |
| 6 | 土星 Saturn | 氣體巨星Gas giant | 約 29.4 個地球年About 29.4 Earth years |
| 7 | 天王星 Uranus | 冰巨星Ice giant | 約 84 個地球年About 84 Earth years |
| 8 | 海王星 Neptune | 冰巨星Ice giant | 約 165 個地球年About 165 Earth years |
離太陽最近，但不是最熱的行星。
Closest to the Sun, but not the hottest planet.
水星是太陽系最小的行星。它的灰褐色岩石地表布滿撞擊坑，幾乎沒有能保留熱量的厚大氣，只有極稀薄的外逸層。因此，白天與夜晚的地表溫差很大。Hey World 的水星下降視角朝向隕石坑地形，近景是 AI 重建，不是探測器實拍的降落影片。
Mercury is the smallest planet in the solar system. Its gray-brown, rocky surface is covered with impact craters. Instead of a substantial atmosphere, it has a very thin exosphere, and surface temperatures vary sharply between day and night. The Hey World descent points toward cratered terrain; the close-up is an AI reconstruction, not footage of a spacecraft landing.
資料來源 · Source: NASA — Mercury Facts
前往水星 · Visit Mercury ↗
濃厚大氣讓金星成為太陽系最熱的行星。
A dense atmosphere makes Venus the hottest planet.
金星是距離太陽第二近的行星，大小與地球相近，環境卻非常不同。以二氧化碳為主的大氣與強烈溫室效應，使地表極度炎熱；上空的厚雲含有硫酸。這提醒我們，距離太陽並不是決定溫度的唯一因素。本站保留原版金星旅行影像，它呈現的是視覺體驗，不能用來量測地形或大氣。
Venus is the second planet from the Sun and is similar in size to Earth. Its thick, mostly carbon-dioxide atmosphere drives an intense greenhouse effect, while clouds contain sulfuric acid. Distance from the Sun alone does not determine a planet’s temperature. Hey World retains its original Venus journey imagery as a visual experience, not a measurement of terrain or atmospheric conditions.
資料來源 · Source: NASA — Venus Facts
前往金星 · Visit Venus ↗我們的家，也是目前唯一已知有生命的世界。
Our home, and the only world known to support life.
地球是距離太陽第三近的行星，也是太陽系中唯一在地表擁有液態水海洋的行星。大氣主要由氮氣與氧氣組成，海洋、大氣和地表共同形成我們熟悉的環境。Hey World 保留原版地球下降動畫；這段旅程提供認識行星的入口，實際觀測與科學數據請閱讀下方 NASA 資料。
Earth is the third planet from the Sun and the only planet in our solar system with liquid-water oceans on its surface. Its atmosphere consists mainly of nitrogen and oxygen. Oceans, air, and land together shape our familiar environment. Hey World preserves its original Earth descent animation; use the NASA source below for observations and scientific data behind the experience.
資料來源 · Source: NASA — Earth Facts
前往地球 · Visit Earth ↗紅色來自氧化鐵；今日的火星是寒冷沙漠。
Iron oxide gives this cold desert its red appearance.
火星是距離太陽第四近的行星，表面土壤中的氧化鐵讓它看起來偏紅。它有稀薄大氣、撞擊坑、火山與峽谷；古老河道等地貌也提供了過去水活動的線索。這些線索不等於已發現火星生命。本站以火星作為旅程起點，保留原版火星進場與下降動畫。
Mars is the fourth planet from the Sun. Iron oxide in its soil gives it a reddish appearance. The planet has a thin atmosphere, craters, volcanoes, and canyons, while ancient river channels provide evidence of past water activity. Evidence of water is not evidence that life has been discovered there. Hey World begins at Mars and retains its original introduction and descent animations.
資料來源 · Source: NASA — Mars Facts
前往火星 · Visit Mars ↗太陽系最大的行星，沒有可供降落的真正地表。
The largest planet has no true surface to land on.
木星是距離太陽第五近的行星，主要由氫與氦組成。從外太空可見的條帶與巨大風暴屬於它的大氣，而不是陸地。隨著深入，壓力和溫度會持續增加；不能把雲頂當成地板。Hey World 的俯視下降止於示意雲層，以 AI 環境圖與運鏡動畫表現這個氣體世界。
Jupiter is the fifth planet from the Sun and consists mainly of hydrogen and helium. Its visible bands and large storms are features of the atmosphere, not land. Pressure and temperature rise deeper inside, so the cloud tops are not a floor. The Hey World overhead descent ends in an illustrative cloud environment created with an AI image and camera animation.
資料來源 · Source: NASA — Jupiter Facts
前往木星 · Visit Jupiter ↗
醒目的環由大量冰與岩石顆粒組成。
Its striking rings consist of many ice and rock particles.
土星是距離太陽第六近的行星，主要成分同樣是氫與氦。土星環不是一整片堅固圓盤，而是無數大小不同的顆粒，主要為冰，也含岩石與塵埃。土星本身沒有可供站立的真正地表；本站的近景呈現雲層重建，下降動畫並不代表人類能在那裡著陸。
Saturn is the sixth planet from the Sun and is also made mostly of hydrogen and helium. Its rings are not a single solid disk: they contain countless particles of different sizes, mostly ice with rock and dust. Saturn has no true surface to stand on. The close-up in this experience reconstructs clouds; the descent does not imply that people could land there.
資料來源 · Source: NASA — Saturn Facts
前往土星 · Visit Saturn ↗
幾乎側躺著自轉的冰巨星。
An ice giant that rotates almost on its side.
天王星是距離太陽第七近的行星，自轉軸傾角約 98 度。它被歸類為冰巨星，但「冰」並不代表外面有一片可以走上去的冰原；它沒有可供降落的真正表面。大氣中的甲烷與它的藍綠色外觀有關。本站使用較淡的青藍雲霧作為示意，畫面不是探測器下降實拍。
Uranus is the seventh planet from the Sun, with an axial tilt of about 98 degrees. It is an ice giant, but the word “ice” does not mean there is an outer frozen plain to walk on: it has no true surface for landing. Atmospheric methane contributes to its blue-green appearance. The pale cyan cloud scene here is an illustration, not a recording of a probe descending.
資料來源 · Source: NASA — Uranus Facts
前往天王星 · Visit Uranus ↗
最外側的行星，有強烈的風與動態大氣。
The outermost planet has powerful winds and an active atmosphere.
海王星是距離太陽第八近的行星，同樣屬於冰巨星，沒有固體表面可供著陸。NASA 記載其風速可超過每小時 2,000 公里。天王星與海王星的真實色彩比一些早期高對比影像更接近；本站參考校正色彩資料，以較自然的青藍色呈現 AI 雲層示意。
Neptune is the eighth planet from the Sun. Like Uranus, it is an ice giant without a solid surface to land on. NASA reports winds that can exceed 2,000 kilometers per hour. Uranus and Neptune are closer in true color than some early high-contrast images suggest. This site uses corrected-color references for a more natural blue-cyan AI cloud illustration.
資料來源 · Source: NASA — Neptune Facts
前往海王星 · Visit Neptune ↗
從太陽往外依序是水星、金星、地球、火星、木星、土星、天王星、海王星。互動首頁的旅行順序從火星開始，是導覽安排，並不是太陽系的軌道順序。
From the Sun outward: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The interactive route begins at Mars for the experience; it does not follow orbital order.
金星最熱，並不是最靠近太陽的水星。金星濃厚、以二氧化碳為主的大氣造成強烈溫室效應。NASA 金星介紹有完整說明。
Venus is the hottest planet, even though Mercury is closer to the Sun. Venus’s dense, mostly carbon-dioxide atmosphere produces an intense greenhouse effect.
木星、土星、天王星與海王星沒有像地球一樣能夠站立的固體表面。本站把這四顆行星的下降終點呈現在大氣雲層中，屬於視覺模擬，不是可執行的降落路線。
Jupiter, Saturn, Uranus, and Neptune have no Earth-like solid surface to stand on. Their descents here end in atmospheric cloud scenes. These are visual simulations, not viable landing routes.
不是。水星、木星、土星、天王星與海王星的近景由 AI 生成，搭配全景參考素材與六秒運鏡製作成動畫。地球、金星與火星保留本專案原有影像；本站不把這些旅行畫面當作科學觀測影片。
No. The five added planets use AI-generated close-up environments, globe references, and six-second camera animations. Earth, Venus, and Mars retain the project’s original imagery. None of these journeys is presented as scientific observation footage.
桌面版可直接選行星名稱；手機版先打開 Menu 選單，再選 Planets 行星。也可點入口前往下一站。鍵盤使用 Tab 移到按鈕後按 Enter；若系統啟用減少動態效果，畫面會跳過大幅移動。
On desktop, select a planet name. On phones, open Menu, then Planets. The portal takes you to the next destination. Use Tab and Enter with a keyboard. The experience respects the system’s reduced-motion preference.
Hey World 是一個獨立的互動太空視覺專案，把行星旅行與可查證的入門知識放在一起。這份指南以 NASA 公開資料為基礎，由 AI 協助整理繁體中文與英文說明。視覺模擬負責引起好奇；科學事實與圖片性質則在每一段標明。
Hey World is an independent interactive space project pairing visual journeys with verifiable introductory information. This guide was compiled with AI assistance from public NASA resources in Traditional Chinese and English. The visual experience invites exploration, while the text identifies scientific sources and the nature of the imagery.
本專案與 NASA 無隸屬或背書關係；AI 近景不是 NASA 照片。地球、金星與火星維持原版影像；五顆新增行星的圖像、來源與生成方式可在公開專案中查閱。
This project is not affiliated with or endorsed by NASA. AI close-ups are not NASA photographs. The public repository documents the added imagery, credits, and generation method.
專案與完整素材署名 · Project and full image credits · AI 畫面製作紀錄 · Generation notes
發現知識或顯示問題，可透過 GitHub Issues 提出。本站未加入分析追蹤碼或註冊表單；GitHub Pages 與影片服務商仍會收到提供頁面和媒體所需的網路請求。
Report factual or display issues through GitHub Issues. This project adds no analytics script or sign-up form. GitHub Pages and the media providers still receive the network requests needed to serve pages and videos.
各行星段落旁附有對應的 NASA 原始資料頁；這裡集中列出，方便繼續閱讀。
Each planet section links to its NASA source. All eight are collected here for further reading.
NASA — 太陽系行星總覽 · Planets overview
NASA — 溫度定義與比較 · Temperatures across our solar system
Royal Astronomical Society — 天王星與海王星的校正色彩 · Corrected colors of Uranus and Neptune
五顆新增行星的全景素材署名：水星 NASA／Johns Hopkins APL／Carnegie Institution of Washington；木星 NASA／JPL／Space Science Institute；土星 NASA／JPL-Caltech／Space Science Institute；天王星 NASA／JPL-Caltech；海王星 Patrick Irwin／University of Oxford／NASA（CC BY 4.0，自校正色彩比較圖裁切）。詳細原圖連結見完整署名清單。
Globe references credit NASA and the mission teams listed above; Neptune’s corrected-color reference credits Patrick Irwin, University of Oxford, and NASA under CC BY 4.0, cropped from a comparison graphic. These globe references are distinct from the AI-generated close-ups shown on this page.
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