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Read through the most famous quotes by topic #astronomy
His laws changed all of physics and astronomy. His laws made it possible to calculate the mass of the sun and planets. The way it's done is immensely beautiful. If you know the orbital period of any planet, say, Jupiter or the Earth and you know its distance to the Sun; you can calculate the mass of the Sun. Doesn't this sound like magic? We can carry this one step further - if you know the orbital period of one of Jupiter's bright moons, discovered by Galileo in 1609, and you know the distance between Jupiter and that moon, you can calculate the mass of Jupiter. Therefore, if you know the orbital period of the moon around the Earth (it's 27.32 days), and you know the mean distance between the Earth and the moon (it's about 200,039 miles), then you can calculate to a high degree of accuracy the mass of the Earth. … But Newton's laws reach far beyond our solar system. They dictate and explain the motion of stars, binary stars, star clusters, galaxies and even clusters of galaxies. And Newton's laws deserve credit for the 20th century discovery of what we call dark matter. His laws are beautiful. Breathtakingly simple and incredibly powerful at the same time. They explain so much and the range of phenomena they clarify is mind boggling. By bringing together the physics of motion, of interaction between objects and of planetary movements, Newton brought a new kind of order to astronomical measurements, showing how, what had been a jumble of confused observations made through the centuries were all interconnected. ↗
I compared what was really known about the stars with the account of creation as told in Genesis. I found that the writer of the inspired book had no knowledge of astronomy -- that he was as ignorant as a Choctaw chief -- as an Eskimo driver of dogs. Does any one imagine that the author of Genesis knew anything about the sun -- its size? that he was acquainted with Sirius, the North Star, with Capella, or that he knew anything of the clusters of stars so far away that their light, now visiting our eyes, has been traveling for two million years? If he had known these facts would he have said that Jehovah worked nearly six days to make this world, and only a part of the afternoon of the fourth day to make the sun and moon and all the stars? Yet millions of people insist that the writer of Genesis was inspired by the Creator of all worlds. Now, intelligent men, who are not frightened, whose brains have not been paralyzed by fear, know that the sacred story of creation was written by an ignorant savage. The story is inconsistent with all known facts, and every star shining in the heavens testifies that its author was an uninspired barbarian. I admit that this unknown writer was sincere, that he wrote what he believed to be true -- that he did the best he could. He did not claim to be inspired -- did not pretend that the story had been told to him by Jehovah. He simply stated the "facts" as he understood them. After I had learned a little about the stars I concluded that this writer, this "inspired" scribe, had been misled by myth and legend, and that he knew no more about creation than the average theologian of my day. In other words, that he knew absolutely nothing. And here, allow me to say that the ministers who are answering me are turning their guns in the wrong direction. These reverend gentlemen should attack the astronomers. They should malign and vilify Kepler, Copernicus, Newton, Herschel and Laplace. These men were the real destroyers of the sacred story. Then, after having disposed of them, they can wage a war against the stars, and against Jehovah himself for having furnished evidence against the truthfulness of his book. ↗
#science #size #stars #truth #imagination
The lifetime of a human being is measured by decades, the lifetime of the Sun is a hundred million times longer. Compared to a star, we are like mayflies, fleeting ephemeral creatures who live out their lives in the course of a single day. ↗
#human-life #life #science #life
The others would then fall silent and she would continue about doped gallium arsenide detectors, or the ethanol content of the galactic cloud W-3. The quantity of 200-proof alcohol in this single interstellar cloud was more than enough to maintain the present population of the Earth, if every adult were a dedicated alcoholic, for the age of the solar system. The tamada had appreciated the remark. ↗
