{
  "id": 7824540,
  "title": "Venus likely swallowed its moon",
  "url": "https://urgent.news/2026/09/16/venus-likely-swallowed-its-moon",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-09-16T16:04:43.000Z",
  "source": {
    "name": "Futurity",
    "slug": "futurity",
    "url": "https://www.futurity.org/venus-ate-its-moon-3345492/"
  },
  "original_language": "en",
  "account": "Scientists have long wondered why Venus, similar to Earth in size, mass, and structure, does not possess a moon. New research published in The Astrophysical Journal reveals that Venus likely swallowed its moon long ago. Previously, two theories existed: that Venus had a moon which was destroyed by a massive collision or that it never formed a moon at all. However, Stephen Kane, an astrophysicist from the University of California, Riverside, and lead author of the study, found neither explanation fits. According to Kane, \"When I made this discovery, I was shocked.\" His research indicates that Venus' slow rotation and strong gravity caused any hypothetical moon to spiral inward and collide with the planet. To validate his hypothesis, Kane created computer models simulating planetary body interactions through gravity. He confirmed the model's accuracy by replicating the known evolution of Earth and its moon before testing various Venusian scenarios, focusing on moons ranging from half to ten times the size of Earth's moon. The majority of simulations showed the moon crashing into Venus, with more massive moons resulting in faster collisions. While Kane acknowledges the possibility that Venus may have once had a moon, the study strongly suggests that if it did, it would not have survived indefinitely. The intense energy transferred during a moon's collision with Venus could potentially alter the planet's rotation, geology, and climate. Such an event may also shed light on Venus' potential to host life in the past. If a moon crashed into Venus, it could have transferred substantial energy and angular momentum to the planet, reshaping its evolution. Kane emphasizes that although Earth's moon plays a crucial role in driving tides, maintaining geological activity, and influencing Earth's evolution, it is not a prerequisite for habitability. The findings imply that planets capable of forming moons might not be able to retain them if they have slow rotations. The study does not conclusively prove that Venus once had a moon, but it does provide evidence that if one did exist, it would not have persisted over time.",
  "summary": "Scientists have long speculated why Venus doesn't have a moon. New research finds an answer.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "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."
}