Which of the following statements about matter-antimatter engines is not true?
A) One of the major challenges to developing matter-antimatter engines is finding a way to store antimatter after it is produced.
B) Matter-antimatter engines would be great in theory, but to date we have no evidence that antimatter even exists.
C) Matter-antimatter reactions represent the most efficient possible reactions in terms of energy release.
D) Spacecraft powered by matter-antimatter engines could probably reach speeds of more than half the speed of light.
Question 2
All neutron stars seen from Earth are pulsars.
Indicate whether the statement is true or false