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Hubble Takes Movies of Space Slinky

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By HubbleSite
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The universe is so big, and it takes so long for most celestial objects to change, that it is rare a telescope can catch something in motion. It helps if the target is moving at nearly the speed of light, and that the Hubble Space Telescope's crystal-clear view can catch subtle changes in one-tenth the time it might take for a ground-based telescope. Astronomers collected 500 Hubble pictures, taken over 13 years to make a movie flipbook of a blowtorch-like jet of gas blasted from the vicinity of a supermassive black hole. The black hole resides in the center of the galaxy M87. The jet has been known about for nearly a century. But the new Hubble movie provides a look at the jet's dynamics. The movie shows that the hot plasma is spiraling along magnetic field lines generated by the 7-billion-solar-mass black hole. These so-called extragalactic jets are seen elsewhere in the universe, but this comparatively nearby jet is offering a detailed look at what powers and aligns them. When Lick Observatory astronomer Heber Curtis first saw the jet in 1918 he described it as "a curious straight ray." Little might Curtis have imagined that we'd someday follow it blazing across space.

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