Astro Glossary

  • Quasars

    The most luminous and some of the most distant of all objects in the universe. They radiate between 10 and 100,000 times as much energy as our entire galaxy from an energy source that is no larger than our solar system. Such a compact source may be a supermassive black hole surrounded by an accretion disk of matter falling into the hole. The matter is heated to millions of degrees, making the accretion disk glow brightly.

  • Quetzalcoatl

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