🪨 小行星带：火星与木星之间的“碎石区”🪨 Asteroid Belt: the Rubble Zone between Mars and Jupiter
上一片里，彗星拖着尾巴路过，陨石掉到地上成了石头。它们的老家之一，就在火星和木星之间——今晚星空向导开飞船带你去看。Last leaf, comets swept past with glowing tails while meteorites fell to Earth as rocks. One of their old neighbourhoods sits between Mars and Jupiter — tonight the star guide flies you there.
第 1 步：碎石区在哪Step 1: Where the rubble zone sits
先跟向导认认路——这条碎石带夹在哪两颗行星之间？First learn the route with the guide — which two planets hug this rubble band?
飞船从太阳出发：先路过红色小个子火星，再穿过一大片灰色碎石，最后到达条纹巨人木星。整条带就是小行星带，住着上百万颗大大小小的石头。Flying out from the Sun: past little red Mars, through a wide field of grey rubble, out to striped giant Jupiter. That whole band is the asteroid belt — home to over a million rocks, big and small.
这么多石头，当初为什么没聚成一颗行星？With so many rocks around, why did they never join up into one planet?
第 2 步：为什么没聚成行星Step 2: Why no planet ever formed
因为邻居木星引力太强，把石头们来回搅，撞碎比长大更快。最大的一颗叫谷神星，圆滚滚近一千公里，算矮行星；旁边坑洼的灶神星小一圈。Because next-door Jupiter pulls so hard it keeps stirring the rocks — smashing beats growing. The biggest one is Ceres, round and nearly a thousand kilometres wide, a dwarf planet; pockmarked Vesta beside it is a size smaller.
石头摸不得吗？人类偏要去摸一把，还带了土回来。Off-limits? Humans went and touched the rocks anyway — and brought dirt home.
第 3 步：摸石头，还要挡石头Step 3: Touch rocks — and stop them
探测器伸出长臂碰一下小行星，扬起的尘土被收进样品舱，送回地球化验。万一有大块头冲向地球，就派飞船把它撞偏——人类真练过这一招。A probe stretches out an arm and taps an asteroid; the kicked-up dust is packed into a sample capsule and mailed back to Earth. And if a big one ever heads our way, we ram a ship into it to nudge it aside — humans have really practised that move.
🎮 开飞船穿碎石区（30 秒）🎮 Fly the ship through the rubble (30 seconds)
道理讲完了。拖着飞船穿过碎石区找谷神星，再采一把土、撞偏一颗险石，一共 4 关。Theory done. Drag the ship through the rubble to find Ceres, grab some dirt, and deflect one scary rock — 4 rounds.
一句话记住它：小行星带是火星和木星之间的碎石区；木星搅局才没聚成行星；最大的是矮行星谷神星；人类会采样，也会撞偏危险的石头。Remember it in one line: the asteroid belt is the rubble zone between Mars and Jupiter; Jupiter's stirring stopped a planet forming; the biggest rock is dwarf planet Ceres; humans sample rocks — and can ram the dangerous ones away.
位置：火星和木星之间，住着上百万颗石头Place: between Mars and Jupiter, home to over a million rocks没聚成行星：木星引力搅局；最大谷神星是矮行星No planet: Jupiter kept stirring; biggest rock Ceres is a dwarf planet人类出手：碰一下采样返回；撞偏冲向地球的大块头Humans act: touch-and-go sample return; ramming big ones off Earth's path
内容参考 OpenStax 等公开教材，多来源核对 · AI 生成、人工审核 · 发现错误欢迎指正，帮这片叶子长得更好。Based on OpenStax and other open textbooks, cross-checked across sources · AI-generated, human-reviewed · Spotted a mistake? Tell us — help this leaf grow.
Back to tree
