How Did Supernova SN 1987A Differ from Most Other Observed

question 254

Multiple Choice

How did supernova SN 1987A differ from most other observed supernovae?

• A) Supernova SN 1987A occurred in an external galaxy, not the Milky Way Galaxy.
• B) Supernova SN 1987A reached a maximum luminosity ten times that of a normal supernova.
• C) Supernova SN 1987A declined in brightness much faster than most supernovae.
• D) Supernova SN 1987A was a blue supergiant when it blew up rather than the usual red supergiant.

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Definitions:

Reactants Ratio

The proportion of the quantities of different substances reacting in a chemical reaction.

Reaction Determination

The process of identifying the specific chemical reaction or mechanism that occurs based on the reactants and products observed.

Decomposition Reaction

A chemical reaction in which a compound breaks down into two or more simpler substances.

CaCO3

Calcium carbonate, a common substance found in rocks as the minerals calcite and aragonite and in the shells of marine organisms, eggs, and snails, used in building material and as a dietary supplement.