As Donald Goldsmith notes, when astronomers say that the galaxy M87 is 60 million light years away, what they really mean ('but do not often stress to the general public') is that it is somewhere between 40 million and 90 million light years away - not quite the same thing.
タグ: science, red-shift, agreement

"Bill Bryson"の他の名言

Nobody gets excited about the future at all, ever. The future is something we find depressing and worrisome.
タグ: find, something, nobody, future
I once joked in a book that there are three things you can't do in life. You can't beat the phone company, you can't make a waiter see you until he is ready to see you, and you can't go home again.
タグ: go, home, you, life
There are things you just can't do in life. You can't beat the phone company, you can't make a waiter see you until he's ready to see you, and you can't go home again.
タグ: go, home, you, life
I want things to be better all the time. And I tend to get angry about that. Books are an opportunity to vent.
タグ: better, angry, opportunity, time
It is unthinkable to have a British countryside that doesn't have actual functioning farmers riding tractors, cows in fields, things like that.
タグ: things, like, farmers, riding
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