There was no "before" the beginning of our universe, because once upon a time there was no time.
John D. BarrowRead
There are only certain intervals of time when life of any sort is possible in an expanding universe and we can practise astronomy only during that habitable time interval in cosmic history.
Interpretation
What this quote means
Life and the ability to practice astronomy are limited to specific periods in the vastness of the universe.
This quote by John D. Barrow reflects on the transient nature of life and knowledge within the grand scope of the universe. It suggests that in an expanding universe, there are only specific time intervals during which life can exist and meaningful knowledge like astronomy can be pursued, emphasizing the preciousness of time and existence in the cosmos.
Themes
UniverseAstronomyTimeLifeCosmic
In practice
Example use cases
In a lecture on the importance of space exploration, this quote can illustrate the significance of our time on Earth.
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The uniformity of the earth's life, more astonishing than its diversity, is accountable by the high probability that we derived, originally, from some single cell, fertilized in a bolt of lightning as the earth cooled.
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It was the darndest thing I've ever seen. It was big, it was very bright, it changed colors and it was about the size of the moon.. We watched it for ten minutes, but none of us could figure out what it was. One thing's for sure, I'll never make fun of people who say they've seen unidentified objects in the sky.
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The feeling of awed wonder that science can give us is one of the highest experiences of which the human psyche is capable. It is a deep aesthetic passion to rank with the finest that music and poetry can deliver. It is truly one of the things that make life worth living and it does so, if anything, more effectively if it convinces us that the time we have for living is quite finite.
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I, too, am convinced that our ancestors came from Africa.
Richard LeakeyRead