Which Sentence About Supernova SN 1987A Is NOT True

question 163

Multiple Choice

Which sentence about supernova SN 1987A is NOT true?

• A) Bursts of neutrinos were detected at several sites from the supernova.
• B) The supernova did not become as intrinsically bright as originally expected.
• C) The supernova was a white dwarf exploding after mass transfer from a companion star in a binary star system.
• D) Observations of the star had been made before it blew up.

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Definitions:

Supply-Side Market Failures

Situations where the production or supply side of the market does not efficiently allocate resources due to externalities or other market imperfections.

Costs

The expenses involved in manufacturing a product or providing a service.

Benefits

Advantages or positive outcomes that result from a particular action or policy.

Cap-And-Trade

An environmental policy tool that sets a limit on emissions and allows companies to trade allowances for emissions as a way to reduce pollutants.