#NASA, #Space, #astronomy, #διάστημα
JWST captured this infrared view of Messier 87, a giant elliptical galaxy 50 million light-years away—the clearest image yet. A "searchlight" from its center is a black hole jet: plasma ejecting from the accretion disk around a 2 billion solar-mass supermassive black hole (a quasar), in opposite directions perpendicular to its spin.These relativistic jets of electrons and particles, powered by twisted magnetic fields like solar coronal ejections, emit synchrotron radiation. Visible jet spans 5,000 light-years optically, 100,000 radio; discovered in 1918 by H.D. Curtis as a "curious straight ray." We see one jet head-on; the other is behind.Image colorized with filters: Violet (300 wide), Blue (450), Green (606), Red (814) wavelengths.
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