{
  "id": 15895553,
  "title": "Astronauts’ hearts just passed a surprising test for Mars",
  "url": "https://urgent.news/2026/10/21/astronauts-hearts-just-passed-a-surprising-test-for-mars",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-10-21T11:59:14.000Z",
  "source": {
    "name": "ScienceDaily Health",
    "slug": "sciencedaily-health",
    "url": "https://www.sciencedaily.com/releases/2026/10/261020085016.htm"
  },
  "original_language": "en",
  "account": null,
  "summary": "A new study tracking 13 astronauts suggests that the human heart may be surprisingly well equipped for a journey to Mars, especially with regular exercise during spaceflight. Researchers found that astronauts' hearts adapted to months of weightlessness and handled simulated Martian gravity without major problems, offering new hope for future missions to the Red Planet.",
  "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."
}