Which of the following statements about matter- antimatter engines is not true?
A)Spacecraft powered by matter- antimatter engines could probably reach speeds of more than half the speed of light.
B)One of the major challenges to developing matter- antimatter engines is finding a way to store antimatter after it is produced.
C)Matter- antimatter reactions represent the most efficient possible reactions in terms of energy release.
D)Matter- antimatter engines would be great in theory, but to date we have no evidence that antimatter even exists.

Question

Quizplus · Accepted Answer

All of the other statements in the options are true. However, D is not true as we do have evidence that antimatter exists. Antimatter has been created and observed in particle accelerators.

Which of the Following Statements About Matter- Antimatter Engines Is