Invisible speeding galaxies that are too old/too fast to see.[livescience.com]
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Feel free to reply to any comment by clicking the "Reply" button.The writer is a little confused in how they're explaining stuff. When ultraviolet (higher frequency) light gets redshifted, it moves down into the visible light range. Further redshifting moves it into the infrared, and then into microwaves and radio waves. That's stuff that we'd need to use a different kind of telescope to look at - not the Hubble. The infrared stuff will be the wheelhouse of the James Webb Space Telescope, when it launches in a year and a half.
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