{
    "id": 11641,
    "url": "https://svs.gsfc.nasa.gov/11641/",
    "page_type": "Produced Video",
    "title": "Cosmic Blast",
    "description": "A nova is a sudden, short-lived explosion from a compact star not much larger than Earth. The outburst comes from a collapsed star known as a white dwarf, which circles so close to a normal star that a stream of gas flows between them. This gas piles up into a layer on the white dwarf's surface until it reaches a flash point and detonates in a runaway thermonuclear explosion. Astronomers estimate that between 20 and 50 novae occur each year in our galaxy, but despite their power most go undiscovered. NASA’s Fermi Gamma-ray Space Telescope has observed several nearby novae and found that each blast produces gamma rays, the most energetic form of light. Scientists think the gamma rays result from collisions among multiple shock waves that race from the site of the explosion in a rapidly expanding shell of debris. Watch the video to see an animation of a nova eruption. || ",
    "release_date": "2014-09-18T11:30:00-04:00",
    "update_date": "2023-05-03T13:50:33.418112-04:00",
    "main_image": {
        "id": 451449,
        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/cy-1024_print.jpg",
        "filename": "cy-1024_print.jpg",
        "media_type": "Image",
        "alt_text": "A stunning amount of energy is unleashed when a star goes nova.",
        "width": 1024,
        "height": 576,
        "pixels": 589824
    },
    "main_video": {
        "id": 451453,
        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/10532-540-MASTER_high.mp4",
        "filename": "10532-540-MASTER_high.mp4",
        "media_type": "Movie",
        "alt_text": "This animation shows a nova outburst from a white dwarf orbiting a red giant star.",
        "width": 960,
        "height": 540,
        "pixels": 518400
    },
    "main_credits": {
        "Visualizations by": [
            {
                "name": "Walt Feimer",
                "employer": "HTSI"
            }
        ],
        "Written by": [
            {
                "name": "Francis Reddy",
                "employer": "Syneren Technologies"
            }
        ]
    },
    "progress": "Complete",
    "media_groups": [
        {
            "id": 340242,
            "url": "https://svs.gsfc.nasa.gov/11641/#media_group_340242",
            "widget": "Basic text with HTML",
            "title": "",
            "caption": "",
            "description": "A nova is a sudden, short-lived explosion from a compact star not much larger than Earth. The outburst comes from a collapsed star known as a white dwarf, which circles so close to a normal star that a stream of gas flows between them. This gas piles up into a layer on the white dwarf's surface until it reaches a flash point and detonates in a runaway thermonuclear explosion. Astronomers estimate that between 20 and 50 novae occur each year in our galaxy, but despite their power most go undiscovered. NASA’s Fermi Gamma-ray Space Telescope has observed several nearby novae and found that each blast produces gamma rays, the most energetic form of light. Scientists think the gamma rays result from collisions among multiple shock waves that race from the site of the explosion in a rapidly expanding shell of debris. Watch the video to see an animation of a nova eruption.",
            "items": [],
            "extra_data": {}
        },
        {
            "id": 340243,
            "url": "https://svs.gsfc.nasa.gov/11641/#media_group_340243",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "A stunning amount of energy is unleashed when a star goes nova.",
            "items": [
                {
                    "id": 289115,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451450,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/cy-1280.jpg",
                        "filename": "cy-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "A stunning amount of energy is unleashed when a star goes nova.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 289116,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451451,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/cy-1024.jpg",
                        "filename": "cy-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "A stunning amount of energy is unleashed when a star goes nova.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289117,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451449,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/cy-1024_print.jpg",
                        "filename": "cy-1024_print.jpg",
                        "media_type": "Image",
                        "alt_text": "A stunning amount of energy is unleashed when a star goes nova.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289118,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451446,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/cy-1024_searchweb.png",
                        "filename": "cy-1024_searchweb.png",
                        "media_type": "Image",
                        "alt_text": "A stunning amount of energy is unleashed when a star goes nova.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                },
                {
                    "id": 289119,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451447,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/cy-1024_web.png",
                        "filename": "cy-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "A stunning amount of energy is unleashed when a star goes nova.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                },
                {
                    "id": 289120,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451448,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/cy-1024_thm.png",
                        "filename": "cy-1024_thm.png",
                        "media_type": "Image",
                        "alt_text": "A stunning amount of energy is unleashed when a star goes nova.",
                        "width": 80,
                        "height": 40,
                        "pixels": 3200
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 340244,
            "url": "https://svs.gsfc.nasa.gov/11641/#media_group_340244",
            "widget": "Video player",
            "title": "",
            "caption": "",
            "description": "This animation shows a nova outburst from a white dwarf orbiting a red giant star.",
            "items": [
                {
                    "id": 289123,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451454,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/pfx-1280.jpg",
                        "filename": "pfx-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "This animation shows a nova outburst from a white dwarf orbiting a red giant star.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 289124,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451455,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/pfx-1024.jpg",
                        "filename": "pfx-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "This animation shows a nova outburst from a white dwarf orbiting a red giant star.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289122,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451453,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/10532-540-MASTER_high.mp4",
                        "filename": "10532-540-MASTER_high.mp4",
                        "media_type": "Movie",
                        "alt_text": "This animation shows a nova outburst from a white dwarf orbiting a red giant star.",
                        "width": 960,
                        "height": 540,
                        "pixels": 518400
                    }
                },
                {
                    "id": 289125,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451456,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/10532-540-MASTER_high.webmhd.webm",
                        "filename": "10532-540-MASTER_high.webmhd.webm",
                        "media_type": "Movie",
                        "alt_text": "This animation shows a nova outburst from a white dwarf orbiting a red giant star.",
                        "width": 960,
                        "height": 540,
                        "pixels": 518400
                    }
                },
                {
                    "id": 289121,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 853163,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/a011641_iPad_movie_10532-540-MASTER/10532-540-MASTER.m3u8",
                        "filename": "10532-540-MASTER.m3u8",
                        "media_type": "File",
                        "alt_text": "This animation shows a nova outburst from a white dwarf orbiting a red giant star."
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 340245,
            "url": "https://svs.gsfc.nasa.gov/11641/#media_group_340245",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "The blast from a nova creates a shock wave that can expand at speeds of 7 million mph. ",
            "items": [
                {
                    "id": 289126,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451459,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s1x-1280.jpg",
                        "filename": "s1x-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "The blast from a nova creates a shock wave that can expand at speeds of 7 million mph. ",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 289127,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451460,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s1x-1024.jpg",
                        "filename": "s1x-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "The blast from a nova creates a shock wave that can expand at speeds of 7 million mph. ",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289128,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451457,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s1x-1024_print.jpg",
                        "filename": "s1x-1024_print.jpg",
                        "media_type": "Image",
                        "alt_text": "The blast from a nova creates a shock wave that can expand at speeds of 7 million mph. ",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289129,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451458,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s1x-1024_web.png",
                        "filename": "s1x-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "The blast from a nova creates a shock wave that can expand at speeds of 7 million mph. ",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 340246,
            "url": "https://svs.gsfc.nasa.gov/11641/#media_group_340246",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "The white dwarf remains intact even though the explosion releases as much energy as our sun emits in 100,000 years.",
            "items": [
                {
                    "id": 289130,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451463,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s2x-1280.jpg",
                        "filename": "s2x-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "The white dwarf remains intact even though the explosion releases as much energy as our sun emits in 100,000 years.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 289131,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451464,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s2x-1024.jpg",
                        "filename": "s2x-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "The white dwarf remains intact even though the explosion releases as much energy as our sun emits in 100,000 years.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289132,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451461,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s2x-1024_print.jpg",
                        "filename": "s2x-1024_print.jpg",
                        "media_type": "Image",
                        "alt_text": "The white dwarf remains intact even though the explosion releases as much energy as our sun emits in 100,000 years.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289133,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451462,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s2x-1024_web.png",
                        "filename": "s2x-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "The white dwarf remains intact even though the explosion releases as much energy as our sun emits in 100,000 years.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 340247,
            "url": "https://svs.gsfc.nasa.gov/11641/#media_group_340247",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "NASA's Fermi spacecraft has observed many novae since 2010, proving that they usually emit gamma rays.",
            "items": [
                {
                    "id": 289134,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451467,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s3-1920.jpg",
                        "filename": "s3-1920.jpg",
                        "media_type": "Image",
                        "alt_text": "NASA's Fermi spacecraft has observed many novae since 2010, proving that they usually emit gamma rays.",
                        "width": 1920,
                        "height": 1080,
                        "pixels": 2073600
                    }
                },
                {
                    "id": 289135,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451468,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s3-1280.jpg",
                        "filename": "s3-1280.jpg",
                        "media_type": "Image",
                        "alt_text": "NASA's Fermi spacecraft has observed many novae since 2010, proving that they usually emit gamma rays.",
                        "width": 1280,
                        "height": 720,
                        "pixels": 921600
                    }
                },
                {
                    "id": 289136,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451469,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s3-1024.jpg",
                        "filename": "s3-1024.jpg",
                        "media_type": "Image",
                        "alt_text": "NASA's Fermi spacecraft has observed many novae since 2010, proving that they usually emit gamma rays.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289137,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451465,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s3-1024_print.jpg",
                        "filename": "s3-1024_print.jpg",
                        "media_type": "Image",
                        "alt_text": "NASA's Fermi spacecraft has observed many novae since 2010, proving that they usually emit gamma rays.",
                        "width": 1024,
                        "height": 576,
                        "pixels": 589824
                    }
                },
                {
                    "id": 289138,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
                    "caption": null,
                    "instance": {
                        "id": 451466,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011641/s3-1024_web.png",
                        "filename": "s3-1024_web.png",
                        "media_type": "Image",
                        "alt_text": "NASA's Fermi spacecraft has observed many novae since 2010, proving that they usually emit gamma rays.",
                        "width": 320,
                        "height": 180,
                        "pixels": 57600
                    }
                }
            ],
            "extra_data": {}
        },
        {
            "id": 340248,
            "url": "https://svs.gsfc.nasa.gov/11641/#media_group_340248",
            "widget": "Basic text",
            "title": "For More Information",
            "caption": "",
            "description": "See [NASA.gov](http://www.nasa.gov/press/2014/july/nasas-fermi-space-telescope-reveals-new-source-of-gamma-rays/#.VBM_ZS-aMpM)",
            "items": [],
            "extra_data": {}
        }
    ],
    "studio": "gms",
    "funding_sources": [
        "PAO"
    ],
    "credits": [
        {
            "role": "Animator",
            "people": [
                {
                    "name": "Walt Feimer",
                    "employer": "HTSI"
                }
            ]
        },
        {
            "role": "Writer",
            "people": [
                {
                    "name": "Francis Reddy",
                    "employer": "Syneren Technologies"
                }
            ]
        }
    ],
    "missions": [],
    "series": [],
    "tapes": [],
    "papers": [],
    "datasets": [],
    "nasa_science_categories": [
        "Universe"
    ],
    "keywords": [
        "App",
        "Ast",
        "Astrophysics"
    ],
    "recommended_pages": [],
    "related": [
        {
            "id": 20184,
            "url": "https://svs.gsfc.nasa.gov/20184/",
            "page_type": "Animation",
            "title": "Fermi Sees a Nova",
            "description": "NASA's Fermi Gamma-ray Space Telescope has detected gamma-rays from a nova for the first time. The finding stunned observers and theorists alike because it overturns a long-standing notion that novae explosions lack the power for such high-energy emissions. In March, Fermi's Large Area Telescope (LAT) detected gamma rays — the most energetic form of light - from the nova for 15 days. Scientists believe that the emission arose as a million-mile-per-hour shock wave raced from the site of the explosion. A nova is a sudden, short-lived brightening of an otherwise inconspicuous star. The outburst occurs when a white dwarf in a binary system erupts in an enormous thermonuclear explosion. \"In human terms, this was an immensely powerful eruption, equivalent to about 1,000 times the energy emitted by the sun every year,\" said Elizabeth Hays, a Fermi deputy project scientist at NASA's Goddard Space Flight Center in Greenbelt, Md. \"But compared to other cosmic events Fermi sees, it was quite modest. We're amazed that Fermi detected it so strongly.\" More information here. || ",
            "release_date": "2010-08-12T00:00:00-04:00",
            "update_date": "2023-05-03T13:54:07.288606-04:00",
            "main_image": {
                "id": 490806,
                "url": "https://svs.gsfc.nasa.gov/vis/a020000/a020100/a020184/NovaCyg093500952_print.jpg",
                "filename": "NovaCyg093500952_print.jpg",
                "media_type": "Image",
                "alt_text": "Watch V407 Cyg go nova! In this animation, gamma rays (magenta) arise when accelerated particles in the explosion's shock wave crash into the red giant's stellar wind.",
                "width": 1024,
                "height": 576,
                "pixels": 589824
            }
        }
    ],
    "sources": [],
    "products": [],
    "newer_versions": [],
    "older_versions": [],
    "alternate_versions": []
}