Event horizon: Quick Facts

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Nov. 8, 2026

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Vibrating mirrors of light create analog of a black hole event horizon • Nov. 6, 2026, 12:40 PM ET (Phys.org)

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black hole in M87

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Schwarzschild radius Hawking radiation Black hole Accretion disk Supermassive black hole How Do Black Holes Really Work?Today in History—January 7: This Will Really Pull You In

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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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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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.

Brightest Star in the Solar System