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event horizon
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black hole in M87
black holes
Explore Karl Schwarzschild's point of no return and the event horizons
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1 July 2002: The Solar and Heliospheric Observatory (SOHO) satellite reveals a massive solar eruption more than 30 times the Earth's diameter. The eruption formed when a loop of a magnetic field over the surface of the Sun trapped hot gas.
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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The merger of two black holes and the gravitational waves that ripple outward as the black holes spiral toward each other. The black holes-which represent those detected by LIGO on Dec. 26, 2015-were 14 and 8 times the mass of the sun, until they merged,
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Spiral Galaxy type Sa-Sb or Sa/Sb in the constellation Virgo. The majestic Sombrero Galaxy Messier 104 (M104) or NGC 4594. The team took six pictures of the galaxy, stitched them together to create the final composite image. Photo from May-June 2003
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Mayer Amschel Rothschild (1744-1855), founder of the house of Rothschild; lithograph by Friedrich Lieder, c. 1830.
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Los Angeles Police Department wanted flyer on Elizabeth Short, aka the "Black Dahlia," who was brutally murdered in January 1947. The FBI supported the Los Angeles Police Department in the case, including by identifying Short through her fingerprints that
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Rural Irish landscape, Sligo, Ireland.
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Baseball laying in the grass. Homepage blog 2010, arts and entertainment, history and society, sports and games athletics
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New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
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A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
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black holes
How to "see" invisible black holes.
Video: Displayed by permission of The Regents of the University of California. All rights reserved. (A Britannica Publishing Partner)
Explore Karl Schwarzschild's point of no return and the event horizons
Learn about Karl Schwarzschild and his work concerning event horizons, notably the...
Video: © Open University (A Britannica Publishing Partner)

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black hole in M87
Black hole at the center of the massive galaxy M87, about 55 million light-years...
Event Horizon Telescope collaboration et al.
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