{
  "id": 16217310,
  "title": "RS-25 Engine Tests at NASA Stennis",
  "url": "https://urgent.news/2026/10/23/rs-25-engine-tests-at-nasa-stennis",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-23T18:57:04.000Z",
  "source": {
    "name": "NASA",
    "slug": "nasa",
    "url": "https://www.nasa.gov/image-article/rs-25-engine-tests-at-nasa-stennis/"
  },
  "original_language": "en",
  "account": null,
  "summary": "NASA conducted a hot fire test of RS-25 engine No. 10001 at Stennis Space Center near Bay St. Louis, Mississippi on October 21, 2026. The test, which lasted for approximately eight-and-a-half minutes, was conducted at 111% power level, mirroring the duration and power output of an RS-25 engine during the launch of NASA's Space Launch System (SLS) rocket. Each Artemis mission utilizes four RS-25 engines, which generate up to 2 million pounds of combined thrust to assist in launching the SLS rocket. Although this developmental engine will not be used in actual flight, the hot fire test provides NASA and its prime engine contractor, L3Harris Technologies, with valuable data to enhance engine performance and reliability.",
  "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."
}