Why an electromagnetic wave can travel through empty space that contains no matter?

'Why' is not a science question.

Answer2:

Space is not empty. Space has resistance z = 375 Ohms which is related to Planck's Constant. Space contains electric C and magnetic W charge, such that h= CW and z = W/C. C = 4/3 atto Coulombs and W = 500 atto Webers.

Answer 3:

Space does not have resistance and does not contain electric charge, and there is no such thing as magnetic charge. Charged bodies and other matter can exist in space, otherwise space is empty. When an electromagnetic wave travels through, the wave is carried in electric and magnetic fields.

The free-space wave impedance is equal to mu0 * c, where mu0 is the permeability of free space, 4pi*10**(-7) H/m and c is the speed of light 2.99792458E8 m/s (it is not related to Planck's constant).

How can free-space have an impedance when it is empty? what the impedance really is is the ratio between the electric and magnetic field intensities, so when the fields are there it isn't empty, it's got the fields in :)

Answer 4:

It may sound like a lousy explanation, but it is possible because there is no reason for it not to be possible. Alternating magnetic and electric fields can propagate according to Maxwell, and there is no reason to believe they need any medium (except maybe analogy with sound).

allow me to add to this answer.

the previous writer tried describing this in how light may travel as a wave through space, but lets remember that electromagnetic radiation, which is light, has a duel nature as both a wave and a particle either called photons or quanta. photons which are particles can flow through space just like meteors can, which needs no medium, in fact, its easier for light to travel through space because there is nothing that can get in the photons way.