The Scorpius-Centaurus OB Association Is Predicted to Have Produced a Supernova

question 303

Multiple Choice

The Scorpius-Centaurus OB association is predicted to have produced a supernova about 2 million years ago.What led to this prediction?

• A) A supernova remnant with the appropriate location and age was found.
• B) O and B stars are massive stars, many of them over 25 solar masses, and they would supernova.
• C) In a close association, collisions between stars are expected, and collisions would raise the mass to the supernova range.
• D) Shock waves from the direction of Scorpius-Centaurus still pass by Earth at frequent intervals.

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