Most distant galaxy came 700 million years after the Big Bang . Comment: This radiation represents the particular wavelength of light that gets emitted when hydrogen atoms get excited in a particular way . The universe is expanding, but it's not as fast or big as you think. The galaxy 's light is red-shifted because the universe is expanding .
Most distant galaxy came 700 million years after the Big Bang . Comment: The universe is expanding, but it's not as fast or big as you think. The galaxy 's light is red-shifted because the universe is expanding .