⟨/⟩ AT Protocol Record Source
at://did:plc:w5d2wdujqqvclobm2voocn7l/site.standard.document/3mlexhoao75v2
← Back to post
{
  "$type": "site.standard.document",
  "bskyPostRef": {
    "cid": "bafyreidxuxfdhdruahll5fp3yb37upjz3asacs7oo4ga5unxhzps7jw4me",
    "uri": "at://did:plc:w5d2wdujqqvclobm2voocn7l/app.bsky.feed.post/3mlexhoao6bv2"
  },
  "coverImage": {
    "$type": "blob",
    "ref": {
      "$link": "bafkreifc32lyqj35n5kgkt5gjrusm653ggv7ayc7xq4pp43sohdwtpxglq"
    },
    "mimeType": "image/jpeg",
    "size": 129112
  },
  "path": "/article/how-can-astronauts-tell-how-fast-theyre-going/",
  "publishedAt": "2026-05-08T23:00:00.000Z",
  "site": "https://wired.jp",
  "tags": [
    "Science",
    "科学 / Science",
    "物理 / Physics",
    "天文学 / Astronomy",
    "宇宙 / Space",
    "宇宙機 / Spacecraft",
    "月 / Moon",
    "ナビゲーション / Navigation"
  ],
  "textContent": "宇宙船には速度を直接測る方法がないが、物理学の知識を使えばそれは求められる。物理学者が解説する。",
  "title": "宇宙船の速度はどうやってわかるのか?"
}