{
  "id": 6147619,
  "title": "Earth's moon could have formed in just 5 hours after giant impact",
  "url": "https://urgent.news/2026/09/07/earths-moon-could-have-formed-in-just-5-hours-after-giant-impact",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-07T16:00:00.000Z",
  "source": {
    "name": "Space.com",
    "slug": "space-com",
    "url": "https://www.space.com/astronomy/moon/earths-moon-could-have-formed-in-just-5-hours-after-giant-impact"
  },
  "original_language": "en",
  "account": "New simulations suggest the moon may have formed in just five hours following a massive collision between Earth and a Mars-sized protoplanet early in the solar system's history. This theory, initially proposed by planetary scientist Robin Canup, has been refined by Adeene Denton and her team at the Southwestern Research Institute. By incorporating more geologic properties into their models, Denton's team found that the temperature of the colliding bodies significantly impacted their strength and the resulting debris distribution. A warmer Theia, which would have occurred if the impact happened closer to the solar system's formation, would have led to the moon's rapid formation from a debris disk, while a colder Theia would have allowed for a more gradual accretion process. Regardless of the initial temperature, the collision would have destroyed Theia and formed the moon primarily from its mantle material, with a smaller amount of Earth's mantle mixed in. These findings could provide insights into the moon's thermal state at the time of formation and potentially impact the search for exomoons around terrestrial exoplanets.",
  "summary": "One day in history about 4.5 billion years ago was a dramatic one for Earth, potentially giving our planet an instant moon and an almighty headache all in one go.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "Phys.org",
        "title": "Early Earth's auroral belts may have formed a natural ion-beam reactor for prebiotic chemistry",
        "url": "https://urgent.news/2026/09/08/early-earths-auroral-belts-may-have-formed-a-natural-ion-beam-reactor",
        "published": "2026-09-08T00:40:04.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}