EM waves can travel across the great vacuum of space, which is why we see light from distant stars and planets. Electromagnetic waves are named for the fact that they have both an electric and a magnetic component. They begin when charged particles, like electrons, vibrate due to the various forces acting on them.
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EM waves can travel across the great vacuum of space, which is why we see light from distant stars and planets. Electromagnetic waves are named for the fact that they have both an electric and a magnetic component. They begin when charged particles, like electrons, vibrate due to the various forces acting on them.