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    "results": [
        {
            "id": 10708,
            "url": "http://svs.gsfc.nasa.gov/10708/",
            "result_type": "Produced Video",
            "release_date": "2011-01-12T12:00:00-05:00",
            "title": "A Flickering X-ray Candle",
            "description": "The Crab Nebula, created by a supernova seen nearly a thousand years ago, is one of the sky's most famous \"star wrecks.\" For decades, most astronomers have regarded it as the steadiest beacon at X-ray energies, but data from orbiting observatories show unexpected variations, showing astronomers their hard X-ray \"standard candle\" isn't as steady as they once thought. From 1999 to 2008, the Crab brightened and faded by as much as 3.5 percent a year, and since 2008, it has faded by 7 percent. The Gamma-ray Burst Monitor on NASA's Fermi satellite first detected the decline, and Fermi's Large Area Telescope also spotted two gamma-ray flares at even higher energies. Scientists think the X-rays reveal processes deep within the nebula, in a region powered by a rapidly spinning neutron star — the core of the star that blew up. But figuring out exactly where the Crab's X-rays are changing over the long term will require a new generation of X-ray telescopes. || ",
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