Imegine a space ship heading towards a star about 100 light years aways. It is propelled by electric current
generated by electromagnetic induction, as the space ship crosses the magnetic fields in space. The current
is given to an electric motor made of superconducitng wires. Thus, no energy would be required to propagate
the space ship over its entire journey.
In a particular region of the space, suppose the temperature becomes so high that the supercondcting
property of the wires of the motor is destrotyed. This causes a panic in the space ship because no power is
generated by the motor.
In a split second, another space ship filled with matter and antimatter stored in different compartments to
produce energy for the first ship comes to its rescue. And the first ship continues its onward journey.
