They can understand it in terms of relative distance and sizes compared with other stellar objects i would imagine, but I think that humans only frame of reference in terms of understanding distance as we would imagine the distance to the next town or city is the size of our own planet, or for a lucky few the distance to the moon. To truly comprehend a distance and size I think you need to have seen a comparable reference first. We talk of light years and distance to other stars, but we have never experienced that distance first hand.
Bobwindy t1_jc4bxco wrote
Reply to comment by I-melted in The largest NASA Hubble Space Telescope image ever assembled, this sweeping bird’s-eye view of a portion of the Andromeda galaxy. Credit: NASA, ESA by Davicho77
They can understand it in terms of relative distance and sizes compared with other stellar objects i would imagine, but I think that humans only frame of reference in terms of understanding distance as we would imagine the distance to the next town or city is the size of our own planet, or for a lucky few the distance to the moon. To truly comprehend a distance and size I think you need to have seen a comparable reference first. We talk of light years and distance to other stars, but we have never experienced that distance first hand.