In What Sense Are the Quasars "Quasi- Stellar

question 78

Multiple Choice

In what sense are the quasars "quasi- stellar"?

• A) Their energy production is hydrogen- helium fusion, like main- sequence stars.
• B) Their spectra are like those of ordinary stars.
• C) They are upscale versions of O stars, yet hundreds of times more massive.
• D) In short time exposures, their images looked stellar.
• E) Their luminosity comes from the millions of supergiants that compose them.

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