Facts about Quasars

1. 07

   Absorption lines in quasar spectra reveal that intergalactic space contains vast clouds of neutral hydrogen gas, enabling astronomers to map the distribution of matter across billions of light-years.

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2. 06

   Ancient quasars observed by the James Webb Space Telescope show that black holes grew to billions of solar masses within just 600 million years of the Big Bang, challenging theories of black hole formation timescales.

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3. 05

   Quasar light takes billions of years to reach Earth, allowing astronomers to observe the universe as it existed when it was less than one billion years old.

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4. 04

   Supermassive black holes powering quasars can spin so rapidly that their ergospheres extend nearly to the event horizon, enabling conversion of rotational energy into relativistic jets at nearly light speed.

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5. 03

   Powerful jets of material ejected from quasars can extend millions of light-years into space, dwarfing entire galaxies and reshaping their cosmic environments.

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6. 02

   In 1963, Maarten Schmidt identified the first quasar, 3C 273, which blazes with the energy output of a trillion suns from a region smaller than our solar system.

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7. 01

   The most distant quasar, UHZ1, was discovered in 2023 and existed just 470 million years after the Big Bang.

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