Facts about Cygnus A

1. 07

   Host galaxy NGC 6603 surrounding Cygnus A contains roughly 100 billion stars distributed across a giant elliptical structure spanning approximately 100,000 light-years in diameter.

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2. 06

   At 610 megahertz, Cygnus A remains one of the brightest extragalactic radio sources detectable from Earth, making it a standard reference source for radio astronomy calibration.

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3. 05

   Powerful jets from Cygnus A's core create expanding lobes of hot gas that heat surrounding material to temperatures exceeding 10 million degrees Kelvin through violent collisions.

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4. 04

   Observations with the Chandra X-ray Observatory revealed that Cygnus A's central region emits powerful X-rays from material heated to millions of degrees by the active black hole's accretion disk.

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5. 03

   In 1951, Cygnus A became the second-strongest radio source discovered in the sky, identified by Grote Reber during early radio astronomy surveys.

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6. 02

   The supermassive black hole powering Cygnus A contains approximately 2.5 billion solar masses and actively accretes material at an extraordinary rate.

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7. 01

   Located approximately 760 million light-years away, Cygnus A produces radio emissions from two jets extending over one million light-years across space.

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