火星为什么是红的：铁锈、尘土和曾经湿润的过去

「火星为什么是红的：铁锈、尘土和曾经湿润的过去」（太空与天文冷知识）字幕级无露脸大纲：钩子、结构时间轴、可核对事实与原创化提醒；参考 2 条上传者字幕。

角度

基于人工字幕定时节拍的选题大纲：火星为什么是红的：铁锈、尘土和曾经湿润的过去
人工字幕参考：7koIlNPay-s、20AFCHjvl1o
只复用定时节拍与可引用事实——旁白须原创；时间戳上屏

钩子

0:00–0:40: 用人工字幕里的真实节拍冷开场，承诺为「火星为什么是红的：铁锈、尘土和曾经湿润的过去」给出可执行的无露脸大纲：时间轴 + 带时间戳事实 + 原创化提醒。旁白须原创，禁止照抄参考片脚本。 7koIlNPay-s@0:00 20AFCHjvl1o@0:02

结构时间轴展开收起

20AFCHjvl1o 0:02–1:08 — For thousands of years, people watched a small red light wander across the night sky, and named it after war.
20AFCHjvl1o 1:14–2:30 — The line is low in the blue, and climbs steeply toward the red. That shape is a fingerprint: the fingerprint of iron joined with oxygen.
20AFCHjvl1o 2:36–3:38 — Mars is a grey planet, dressed in a thin coat of rusty dust.
20AFCHjvl1o 3:44–5:00 — It carries electric charge, so it clings to solar panels, windows and spacesuits, and works its way into seals, joints and, if we're careless, lungs.
20AFCHjvl1o 5:06–6:22 — Curiosity photographed one in April 2015. On Earth, the sky is blue and sunsets are red. On Mars, it's the other way round: sunsets are blue.
20AFCHjvl1o 6:28–6:28 — the first briefing all the way to a living planet, subscribe, and I'll see you in episode four.
7koIlNPay-s 0:00–1:02 — I'm Fraser Cain, the publisher of Universe Today.
7koIlNPay-s 1:05–2:07 — But if you look closely at the surface of Mars, you'll see that it can actually be many different colours.
7koIlNPay-s 2:12–2:49 — But on Mars, the opposite thing happens. The dust in the atmosphere scatters the red photons, makes the sky appear red.

字幕可核对事实展开收起

字幕依据：For thousands of years, people watched a small red light wander across the night sky, and named it after war. Even its two little moons are named Phobos and Deimos: fear and dread. Today we know where that colour comes from: rust. 20AFCHjvl1o@0:02
字幕依据：The line is low in the blue, and climbs steeply toward the red. That shape is a fingerprint: the fingerprint of iron joined with oxygen. And Mars has plenty of iron to rust: its surface holds more than twice as much as the rocks of Earth's continents. 20AFCHjvl1o@1:14
字幕依据：Mars is a grey planet, dressed in a thin coat of rusty dust. Earth's red deserts work the same way: in the Australian outback, the sand grains are pale inside, wrapped in a thin skin of rust. Through a telescope, it shows bright orange regions and darker patches. 20AFCHjvl1o@2:36
字幕依据：It carries electric charge, so it clings to solar panels, windows and spacesuits, and works its way into seals, joints and, if we're careless, lungs. NASA scientists are already working out how much Mars dust astronauts could safely breathe. 20AFCHjvl1o@3:44
字幕依据：Curiosity photographed one in April 2015. On Earth, the sky is blue and sunsets are red. On Mars, it's the other way round: sunsets are blue. For a colony, all this red dust isn't only a problem. Its iron could be turned into steel, and because rust is iron joined with oxygen, splitting it apart could also release oxygen. 20AFCHjvl1o@5:06
字幕依据：I'm Fraser Cain, the publisher of Universe Today. Another name for Mars is the Red Planet, and if you've ever seen it in the sky when the planet is bright and close to Earth, it appears like a bright red star. In Roman mythology, Mars was the god of war, so... 7koIlNPay-s@0:00
字幕依据：But if you look closely at the surface of Mars, you'll see that it can actually be many different colours. Some regions appear bright orange, while others look more brown or even black. But if you average everything out, you get Mars' familiar red colour. 7koIlNPay-s@1:05
字幕依据：But on Mars, the opposite thing happens. The dust in the atmosphere scatters the red photons, makes the sky appear red. We have something similar when there's pollution or smoke in the air. The dust absorbs and deflects the red light, so you see more of the blue photons streaming from the Sun. 7koIlNPay-s@2:12

节拍 / 大纲

钩子（0:00–0:40）：冷开场点题「火星为什么是红的：铁锈、尘土和曾经湿润的过去」——讲清火星红色的原因是铁锈（旁白原创，勿照抄参考片）。
要点 1：讲清火星红色的原因是铁锈（20AFCHjvl1o@0:02）。
要点 2：演示铁锈形成的过程（20AFCHjvl1o@1:14）。
要点 3：讲清火星表面铁的含量（20AFCHjvl1o@2:36）。
要点 4：演示火星灰色表面被铁锈覆盖（20AFCHjvl1o@3:44）。
要点 5：讲清火星尘土对人类的影响（20AFCHjvl1o@5:06）。
收尾：三条定时引用回顾卡 + 来源上屏。旁白须原创。

转场

冷开场后打标题卡点明「火星为什么是红的：铁锈、尘土和曾经湿润的过去」的承诺。
切换参考片时用下三分显示 video id + 时间戳，方便核对。
收尾前定格回顾卡，放入事实列表里 3 个可核对点。

收尾 / CTA

用回顾卡结束「火星为什么是红的：铁锈、尘土和曾经湿润的过去」，列出 3 条定时引用；评论区征集下一子角度。旁白须原创——只复用节拍，不复用原片台词。

参考片对照

多参考时按「对题片段密度」分配时长，默认不要均分。
参考 7koIlNPay-s：保留定时节拍，去掉广告/片尾求订阅。
参考 20AFCHjvl1o：保留定时节拍，去掉广告/片尾求订阅。

原创化建议

TTS 旁白原创；画面下三分标注片名与时间戳作研究引用。
不要粘贴主持人梗、赞助口播或片尾固定 CTA。
优先使用带时间戳的具体事实，避免空泛的「专家说」。
时间轴/事实里没有的主张：删掉，或明确标成你的假说。

参照片

Why Is Mars Red? 7koIlNPay-s
Why Is Mars Red? The Rust That Remembers Water (Ep. 3) #Mars #SpaceExploration #MartianBlueprint 20AFCHjvl1o

方法

yt-dlp VTT 人工字幕（上传者提供，非自动/ASR）→ 全文按 60–90 秒切段（超长视频关键词定位）→ 选题级编辑综合。仅结构参考；旁白须原创。