Which of the following statements about matter- antimatter engines is not true?
A)Matter- antimatter engines would be possible in theory, but to date, we have no evidence that antimatter exists.
B)One of the major challenges to developing matter- antimatter engines is finding a way to produce enough antimatter.
C)Matter- antimatter reactions represent the most efficient reactions possible in terms of energy release.
D)Spacecraft powered by matter- antimatter engines could probably reach speeds of 90 percent of the speed of light.
E)One of the major challenges to developing matter- antimatter engines is finding a way to store antimatter after it is produced.

Question

Quizplus · Accepted Answer

This statement is not true because we do have evidence that antimatter exists, and it has been observed and studied in particle accelerators.

Which of the Following Statements About Matter- Antimatter Engines Is