When we gaze out into our Universe with our best telescopes, we see something similar: nearby are lots of large and mature galaxies like our own, but very far away, we see mostly small baby galaxies that don’t yet look fully developed. Beyond them we see no galaxies at all, merely darkness. Since it takes light longer to reach us from farther away, gazing into the distance is equivalent to observing the past.
Gazing into the distance is equivalent to observing the past
