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This competition between forces may reach an equilibrium, setting a natural speed limit for millisecond pulsars beyond which they cannot spin faster. || ", "release_date": "2007-07-03T00:00:00-04:00", "update_date": "2023-05-03T13:55:40.408593-04:00", "main_image": { "id": 508297, "url": "https://nasaviz.gsfc.nasa.gov/vis/a010000/a010100/a010143/PulsarWide065.jpg", "filename": "PulsarWide065.jpg", "media_type": "Image", "alt_text": "This animation shows a wide shot of a millisecond pulsar.", "width": 1280, "height": 720, "pixels": 921600 }, "main_video": { "id": 508289, "url": "https://nasaviz.gsfc.nasa.gov/vis/a010000/a010100/a010143/pulsar_wide_720p.webmhd.webm", "filename": "pulsar_wide_720p.webmhd.webm", "media_type": "Movie", "alt_text": "This animation shows a wide shot of a millisecond pulsar.", "width": 960, "height": 540, "pixels": 518400 }, "progress": "Complete", "media_groups": [ { "id": 357162, "url": "https://nasaviz.gsfc.nasa.gov/10143/#media_group_357162", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "A pulsar is generally believed to be a rapidly rotating neutron star that emits pulses of radiation (such as x-rays and radio waves) at known regular intervals. 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