Review:
Quasars
overall review score: 4.5
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score is between 0 and 5
Quasars are extremely luminous and energetic sources of electromagnetic radiation that are powered by supermassive black holes at the centers of galaxies.
Key Features
- Supermassive black holes
- High energy output
- Luminosity
- Redshifted spectra
Pros
- Provide valuable information about distant galaxies
- Help scientists understand the evolution of galaxies and black holes
- Can be used as 'standard candles' for measuring cosmological distances
Cons
- Difficult to observe due to their extreme distance from Earth
- Limited understanding of the exact mechanisms powering quasars