{
  "id": 5536667,
  "title": "Scientists watch a comet being born 3 billion miles away",
  "url": "https://urgent.news/2026/09/04/scientists-watch-a-comet-being-born-3-billion-miles-away",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-04T10:00:00.000Z",
  "source": {
    "name": "Space.com",
    "slug": "space-com",
    "url": "https://www.space.com/astronomy/comets/scientists-watch-a-comet-being-born-3-billion-miles-away"
  },
  "original_language": "en",
  "account": "Astronomers have captured the birth of a comet 3 billion miles away, providing a crucial link between comets and centaurs. The object, named 450P/LONEOS, was discovered in 2004 by the Lowell Observatory survey. Centaurs are icy bodies orbiting the sun between Jupiter and Neptune, with orbits that can become unstable due to gravitational interactions with the giant planets. This instability can push centaurs closer to the sun, where they may transform into Jupiter-family comets with orbital periods under 20 years. However, no one has ever observed a centaur directly becoming a Jupiter-family comet.\n\nScientists at the University of Central Florida, led by Charles Schambeau, have been monitoring the transformation of 450P/LONEOS. Using the Gemini North telescope in Hawaii, they observed the formation of a coma, a cloud of gas and dust, around the solid nucleus of 450P. This coma brightened between 2019 and 2024 as the object approached perihelion, the closest point to the sun in its orbit. If 450P continues to exhibit comet-like behavior and receives another gravitational boost from a giant planet, it could become a Jupiter-family comet.\n\nStudying objects like 450P helps scientists understand small-body evolution, including how comets change as they move inward through the solar system and how they preserve primitive ices. By analyzing 450P's coma, researchers detected carbon dioxide gas and hints of crystalline ice particles. The presence of carbon dioxide suggests that it is driving the activity on 450P, while the absence of water vapor indicates that heating has transformed the amorphous ice into crystalline ice. This transition provides insight into the early stages of a centaur's evolution into a comet.",
  "summary": "A rare look at a centaur transforming into a comet with coma is providing a missing link in the evolution of small, icy solar system bodies.",
  "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."
}