"Pioneer anomaly" meaning in English

{
  "etymology_text": "Named after NASA space probes Pioneer 10 and Pioneer 11.",
  "forms": [
    {
      "form": "Pioneer anomalies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Pioneer anomaly (countable and uncountable, plural Pioneer anomalies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Aerospace",
          "orig": "en:Aerospace",
          "parents": [
            "Aeronautics",
            "Astronautics",
            "Sciences",
            "Space",
            "Applied sciences",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System."
      ],
      "id": "en-Pioneer_anomaly-en-noun-kbX3wY8s",
      "links": [
        [
          "aerospace",
          "aerospace"
        ],
        [
          "deviation",
          "deviation"
        ],
        [
          "acceleration",
          "acceleration"
        ],
        [
          "spacecraft",
          "spacecraft"
        ],
        [
          "astronomical unit",
          "astronomical unit"
        ],
        [
          "trajectories",
          "trajectory"
        ],
        [
          "Solar System",
          "Solar System"
        ]
      ],
      "raw_glosses": [
        "(aerospace) The observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "aerospace",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ],
      "wikipedia": [
        "Pioneer 10",
        "Pioneer 11"
      ]
    }
  ],
  "word": "Pioneer anomaly"
}

{
  "etymology_text": "Named after NASA space probes Pioneer 10 and Pioneer 11.",
  "forms": [
    {
      "form": "Pioneer anomalies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Pioneer anomaly (countable and uncountable, plural Pioneer anomalies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Aerospace"
      ],
      "glosses": [
        "The observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System."
      ],
      "links": [
        [
          "aerospace",
          "aerospace"
        ],
        [
          "deviation",
          "deviation"
        ],
        [
          "acceleration",
          "acceleration"
        ],
        [
          "spacecraft",
          "spacecraft"
        ],
        [
          "astronomical unit",
          "astronomical unit"
        ],
        [
          "trajectories",
          "trajectory"
        ],
        [
          "Solar System",
          "Solar System"
        ]
      ],
      "raw_glosses": [
        "(aerospace) The observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "aerospace",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ],
      "wikipedia": [
        "Pioneer 10",
        "Pioneer 11"
      ]
    }
  ],
  "word": "Pioneer anomaly"
}