https://www.popsci.com/science/artic...-faster-light/
Quote:
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Take Hydra, a cluster of galaxies about three billion light years away. Astronomers have measured the distance from the Earth to Hydra by looking at the light coming from the cluster. Through a prism, Hydra's hydrogen looks like four strips of red, blue-green, blue-violet and violet. But during the time it takes Hydra's light to reach us, the bands of color have shifted down toward the red end—the low-energy end—of the spectrum. On their journey across the universe, the wavelengths of light have stretched. The farther the light travels, the more stretched it gets. The farther the bands shift toward the red end, the farther the light has traveled. The size of the shift is called the redshift, and it helps scientists figure out the movement of stars in space.
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So you’ve got faster than the speed of light, redshift, and Hydra! Downside of this is the inevitable memes of Captain America in patriots gear, so...oh well forget it.
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