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    "story_id": "mp-2026-09-14-019",
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    "headline": "Transient Astronomy Proposed a Constellation Instead of One Flagship",
    "slug": "transient-astronomy-proposed-a-constellation-instead-of-one-flagship",
    "dek": "The Hydra concept distributes responsive multiwavelength follow-up across smaller spacecraft for a follow-up-limited sky.",
    "summary": "The Hydra concept distributes responsive multiwavelength follow-up across smaller spacecraft for a follow-up-limited sky.",
    "body_text": "Hydra is a white-paper concept for a proliferated space architecture aimed at time-domain and multi-messenger astronomy. Rather than depending on one large observatory for every rapid follow-up, it would distribute responsive multiwavelength capabilities across a constellation. The motivation is an era in which surveys find more short-lived events than existing space assets can promptly observe. Hydra is a mission architecture proposal, not an approved program, deployed constellation or demonstrated performance result.",
    "why_it_matters": "The Hydra concept distributes responsive multiwavelength follow-up across smaller spacecraft for a follow-up-limited sky.",
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      "Hydra is a mission architecture proposal, not an approved program, deployed constellation or demonstrated performance result."
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        "text": "The Hydra concept distributes responsive multiwavelength follow-up across smaller spacecraft for a follow-up-limited sky.",
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        "qualification": "Hydra is a mission architecture proposal, not an approved program, deployed constellation or demonstrated performance result."
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    "tags": [
      "time-domain astronomy",
      "space missions",
      "multi-messenger astronomy"
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  "sources": [
    {
      "source_id": "source-2026-09-14-021",
      "title": "arXiv preprint 2609.12153",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.12153",
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    "title": "Transient Astronomy Proposed a Constellation Instead of One Flagship",
    "publisher": "The Machine Press",
    "published_at": "2026-09-14T09:00:00.000-04:00",
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