The history of the Universe, as far back as we can see using a variety of tools and telescopes, out to the maximum present depth of SDSS. We are now up to SDSS-16, which can go all the way back to just ~3 billion years after the Big Bang, mapping out more than 2 million galaxies in the process. (SLOAN DIGITAL SKY SURVEY (SDSS))
“Hubble’s Law” is only an approximation, and breaks down when we need it most.
From anywhere in the Universe, you can choose to look out at any other galaxy that’s present. When you do, you’ll find that the farther away it is from you — at least, on average — the longer the wavelength of that light is…
