query: How is observable universe so big if the universe is so young?
positive_passages.docid: 55505
positive_passages.text: How can a quasar be 29 billion light-years away from Earth if Big Bang happened only 13.8 billion years ago?
negative_passages.docid: 3644
negative_passages.text: Symmetrical twin paradox in a closed universe
negative_passages.docid: 73729
negative_passages.text: Calculating the age of the Universe now and 30 billion years from now
negative_passages.docid: 51361
negative_passages.text: How does the Hubble parameter change with the age of the universe?
negative_passages.docid: 32061
negative_passages.text: Why isn't the center of the galaxy "younger" than the outer parts?
negative_passages.docid: 65985
negative_passages.text: How can the universe by infinite when it has known start and finite time since?
negative_passages.docid: 18026
negative_passages.text: How can it be that the beginning universe had a high temperature and a low entropy at the same time?
negative_passages.docid: 43888
negative_passages.text: Age of universe?
negative_passages.docid: 22682
negative_passages.text: If everything in the universe doubled in size overnight, would it be noticeable?
negative_passages.docid: 73935
negative_passages.text: Why the temperature is getting lower when the universe is expanding
negative_passages.docid: 75070
negative_passages.text: Will the CMB eventually recede outside our observable universe?
negative_passages.docid: 148838
negative_passages.text: Is the total mass of the universe constant in time?
negative_passages.docid: 136212
negative_passages.text: How is the expansion of space itself explained in LQG?
negative_passages.docid: 124618
negative_passages.text: How can we know the time frames for events in the early universe?
negative_passages.docid: 51901
negative_passages.text: Ambiguity in applying Newton's shell theorem in an infinite homogeneous universe
negative_passages.docid: 24445
negative_passages.text: How can an infinite universe expand?
negative_passages.docid: 113659
negative_passages.text: Why was the universe in an extraordinarily low-entropy state right after the big bang?