A Quote by Carl Sagan
There is much that science doesn't understand, many mysteries still to be resolved. In a Universe tens of billions of light-years across and some ten or fifteen billion years old, this may be the case forever. We are constantly stumbling on new surprises
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A supernova is one of the most powerful explosions in the universe. It's so luminous, it can be seen across billions of light years. It releases as much energy in an instant as our sun will produce over its 10-billion-year lifetime.
Pure science - this vision of the universe as 15 billion light years across - I am bedazzled and awed by it.
We might expect intelligent life and technological communities to have emerged in the universe billions of years ago. Given that human society is only a few thousand years old, and that human technological society is mere centuries old, the nature of a community with millions or even billions of years of technological and social progress cannot even be imagined. ... What would we make of a billion-year-old technological community?
I constantly work with material that could be two years old, five years old, ten years old, as well as new things.
Everything matters. The Universe is approximately fifteen billion years old, and I swear that in all that time, nothing has ever happened that has not mattered, has not contributed in some way to the totality.
What we see of the universe is vast. We know that the universe is something like 90 billion light-years across.
If we could magically transport ourselves back to the young Earth, when it was only a billion years old or two billion years old or three billion years old or four billion years old, we wouldn't be able to survive. We would have a hard time surviving if we were transported to the time when dinosaurs were around.
I never said it. Honest. Oh, I said there are maybe 100 billion galaxies and 10 billion trillion stars. It's hard to talk about the Cosmos without using big numbers. I said "billion" many times on the Cosmos television series, which was seen by a great many people. But I never said "billions and billions." For one thing, it's too imprecise. How many billions are "billions and billions"? A few billion? Twenty billion? A hundred billion? "Billions and billions" is pretty vague. When we reconfigured and updated the series, I checked-and sure enough, I never said it.
Nature teaches us that tens of billions of light years may have passed, and life in all of its expressions has always been subjected to an incredible combination of matter and radiation.
The brain is a three pound mass you can hold in your hand that can conceive of a universe a hundred billion light-years across.
As commonly understood, creationism involves belief in an earth formed only about ten thousand years ago, an interpretation of the Bible that is still very popular. For the record, I have no reason to doubt that the universe is the billions of years old that physicists say it is. Further, I find the idea of common descent (that all organisms share a common ancestor) fairly convincing, and have no particular reason to doubt it.
The first ten, twelve or fifteen years of life are excavated of inherent moral worth in order to accommodate a regimen of basic training for the adult years that many of the poorest children may not even live to know.
I remind myself that the universe is 15 billion years old, and I'm only 46 years old, so my perspective is sort of limited and fear-based and skewed. So I sort of turn things over to whatever you want to call it - whether it's God, or the universe or the spirit of the universe - and I just sort of turn things over to God and hope that this spirit that has been around for 15 billion years will have a better understanding of how things should be than I do.
A lack of resources may slow you down, but don't let it make you throw away a big idea. Give God five years, ten years, fifteen years, twenty years, twenty-five years, thirty years, forty years, or more. Give God all the time He needs to bring the resources to you!
The age of the Earth is a hotly debated issue among evangelicals. Old Earthers believe, like most scientists, that the universe is billions of years old. Young Earthers measure the age of the universe in terms of thousands of years.
A beloved student of mine told me she believed the earth was approximately 6,000 years old. She was smart, she was thoughtful, and she was wrong. But I couldn't discount her - I respected her too much. So I debated with her, using every bit of science and logic I had, but I still failed to convince her that the earth was billions of years old.
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