No civilization no matter how advanced can ever hope to see the farthest reaches of the universe. The known observable universe is 43.5 billion light years which equates to 93 billion light years in total diameter(unseen.) However, the expanding universe theory states that the universe is in a constant state of accelerated expansion. As thus it's expanding faster than light travels, growing in diameter by lightyears every second. Nothing then can ever fully understand and observe the entirety of existence. There will always and forever remain more unanswered questions than answered.