If the universe is only 14 billion years old, how can it be 92 billion light years wide?

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Published 2019-06-19
The size and age of the universe seem to not agree with one another. Astronomers have determined that the universe is nearly 14 billion years old and yet its diameter is 92 billion light years across. How can both of those numbers possibly be true? In this video, Fermilab’s Dr. Don Lincoln tells you how.

For further information, see www.fnal.gov/

All Comments (21)
  • @arcturns9616
    Short answer: The universe is expanding faster that the speed of light.
  • if everybody leaves their toast in for 8 minutes....this could account for most of the dark matter in the universe
  • @aronean
    If the universe is so big, why won’t it fight me?
  • I’ve seen this video three times already and still can’t figure it out
  • @MonsieurButter
    Basically space is expanding so fast it’s decreasing our render distance
  • @nonsookoye3163
    Who else or is it just me who enjoys topics as this, but really understand very little at the end? Lol
  • @vinrave
    So basically he is saying that we will never ever know how really big the universe is. It’s because we can’t see anything that is beyond 15Billion light years due to the expansion of universe is faster than the speed of light. The fact that we are loosing 20k stars per seconds on our line of sights speaks how fast the universe is expanding. This is very fascinating!
  • @Ramlabam1
    Interesting Video. Then the obvious next question is, if the universe is really limited in space-time, what comes after? And if its really expanding, what is the content that it is expanding in?
  • Actually it's 1.2 trillion wide. I just finished measuring with my yard stick
  • @shak8791
    I usually toast my bread for 8 minutes until it’s a crisp charcoal black
  • @brianstevens3858
    Provided that the expansion rate is not slowed or even reversed.
  • This is one of those things that when you try to analyse in earthly terms, things just don't fit. The reason that the two time spans don't agree is that time and distance having the interconnection have two different dimentions thus two different time spans.
  • @kdubs9111
    I seriously thought this guy was going to sell me the Old Testament
  • @ProfessorFate
    You say “Nothing travels faster than light.” However, I recall from Doug Adams’s “Hitchhikers Guide to the Galaxy” that their spaceship was powered by “bad news” because “nothing travels faster than bad news.” Of course, wherever they went, they were not welcome. Thanks for the clever video.
  • Then we cannot use size to gauge time. And it begs, how long has the expansion been uniform?