5 ms·
How can the further Galaxy be 20 billion light years away?
by gmm1990 8y ago
How can the further Galaxy be 20 billion light years away?
- McKayDavis 8y agosee my comment here: https://news.ycombinator.com/item?id=19483785 https://news.ycombinator.com/item?id=19483785
- 6nf 8y agoThe universe began 13.8 billion years ago. However the universe is not expanding at the speed of light. It's expanding faster than that, such that the observable universe from earth's perspective is about 47 billion light years in radius.