JGeropoulas
The Living Force
Periodically, I go home to visit my aging parents. My father is 83 and amazing. He still practices law full-time; he conquers the crossword puzzle each evening--in ink--while watching the history channel; and best of all, he remains quite adept at discussing a wide range of abstractions and hypotheticals, as we've done for most of my 53 years.
Inevitably when I'm there, he gives me an interesting article he's been re-reading from his 45-year collection of National Geographic! Most recently, he handed me a May, 1974 issue with an article entitled, "The Incredible Universe."
I enjoyed it so much, I wanted to share the following excerpt, as well as a variety of quotes embedded in the article:
Inevitably when I'm there, he gives me an interesting article he's been re-reading from his 45-year collection of National Geographic! Most recently, he handed me a May, 1974 issue with an article entitled, "The Incredible Universe."
I enjoyed it so much, I wanted to share the following excerpt, as well as a variety of quotes embedded in the article:
...and the quotes..."How does one comprehend the incredible size of this galaxy-filled universe? For such awesome distances astronomers think in terms of time, and use the telescope as a time machine. They measure space by a unit called the light-year, the distance light travels in one year at the rate of 186,282 miles per second - about six trillion miles.
But even then, comprehension is difficult; how can the human mind deal with the knowledge that the farthest object we can see in the universe is perhaps ten billion light-years away?
If we imagine that the thickness of one sheet of paper represents the distance from earth to our sun (93,000,000 miles, or about eight light-minutes), then the distance to the nearest star (4 1/3 light-years) would require a stack of paper 71 feet high.
And the diameter of our own galaxy (100,000 light-years) would require a stack 310 miles high.
And the edge of the known universe would require a stack of paper 31 million miles high - a third of the actual distance to our sun!"
...and the last one, my new favorite..."Earth is but a small... planet... of a minor star off at the edge of an inconsiderable galaxy"
-- Archbald MacLeish
"Galaxies are to astronomy what atoms are to physics"
-- Allan Sandage, American astronomer
"Star to star vibrates light."
-- Tennyson in "Aylmer's Field"
"There is nothing so far removed from us as to be beyond our reach or so hidden that we cannot discover it."
-- Descartes
"Absence of evidence is not evidence of absence."
-- Anonymous