94 Billion光年了# ebiz - 电子商务
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The size of the Universe
http://cosmictimes.gsfc.nasa.gov/teachers/guide/age_size.html
2006
Age: 13.7 Billion Years
Size: 94 Billion Light Years
The most distant objects in the Universe are 47 billion light years away,
making the size of the observable Universe 94 billion light years across.
How can the observable universe be larger than the time it takes light to
travel over the age of the Universe? This is because the universe has been
expanding during this time. This causes very distant objects to be further
away from us than their light travel time.
http://cosmictimes.gsfc.nasa.gov/teachers/guide/age_size.html
2006
Age: 13.7 Billion Years
Size: 94 Billion Light Years
The most distant objects in the Universe are 47 billion light years away,
making the size of the observable Universe 94 billion light years across.
How can the observable universe be larger than the time it takes light to
travel over the age of the Universe? This is because the universe has been
expanding during this time. This causes very distant objects to be further
away from us than their light travel time.
