Is so- called "empty" space really empty?
A) Yes, because conservation of energy forbids the spontaneous creation of matter or radiation.
B) Yes, because nothing exists other than particles and empty space.
C) No, because all space is filled with a physical substance known as "ether."
D) No, because of random quantum fluctuations.
E) No, because neutrinos are always present at every point in the universe.

Question

Quizplus · Accepted Answer

Empty space is not truly empty due to quantum fluctuations, which allow for the temporary appearance of particle-antiparticle pairs.

Is So- Called "Empty" Space Really Empty