What one would see during light speed travel. Source
It has become iconic in science fiction, the image of stars streaming past, becoming extended lines of light as a traveller approaches, or even exceeds, light speed. A group of students from the University of Leicester has shattered this common place image, however. By applying the laws of relativity, they have shown that an observer on a craft approaching the speed of light would not see stars streaming by, instead they would see a dull glow as the doppler effect shifted the universe's Cosmic Background into visible light. The light from stars would be streaming in so fast that it would become X-ray radiation from the travelers perspective, and therefore you wouldn't even see the stars.
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