EL COMETA del autor CARL SAGAN Y ANN DRUYAN (ISBN 680). Comprar libro completo al MEJOR PRECIO nuevo o segunda mano, leer online la sinopsis o resumen. Jan 01, 1985 Being the seventh Carl Sagan's book I've read,'Comet' was a book co-written by, of course, the late Great Carl Sagan and Ann Druyan in 1985 before the.

1. Ann Druyan
2. Carl Sagan Quotes

A respected planetary scientist best known outside the field for his popularizations of astronomy, Carl Sagan was born in New York City on November 9, 1934. He attended the University of Chicago, where he received a B.A. In 1954, a B.S. In 1955, and a M.S. In 1956 in physics as well as a Ph.D. In 1960 in astronomy and astrophysics. He has several early scholarly achievements including the experimental demonstration of the synthesis of the energy-carrying molecule ATP (adenosine triphosphate) in primitive-earth experiments.

Another was the proposal that the greenhouse effect explained the high temperature of the surface of Venus. He was also one of the driving forces behind the mission of the U.S. Satellite Viking to the surface of Mars.

He was part of a team that investigated the effects of nuclear war on the earth's climate - the 'nuclear winter' scenario. Sagan's role in developing the 'Cosmos' series, one of the most successful series of any kind to be broadcast on the Public Broadcasting System, and his book The Dragons of Eden (1977) won the Pulitzer Prize in 1978. He also wrote the novel Contact, which was made into a movie starring Jodie Foster.

He died from pneumonia on December 20, 1996.

WHAT ARE THESE GRACEFUL VISITORS TO OUR SKIES? WE NOW KNOW THAT THEY BRING BOTH LIFE AND DEATH AND TEACH US ABOUT OUR ORIGINS.

Comet begins with a breathtaking journey through space astride a comet. Pulitzer Prize-winning astronomer Carl Sagan, author of Cosmos and Contact, and writer Ann Druyan explore the origin, nature, and future of comets, and the exotic myths and port WHAT ARE THESE GRACEFUL VISITORS TO OUR SKIES? WE NOW KNOW THAT THEY BRING BOTH LIFE AND DEATH AND TEACH US ABOUT OUR ORIGINS. Comet begins with a breathtaking journey through space astride a comet. Pulitzer Prize-winning astronomer Carl Sagan, author of Cosmos and Contact, and writer Ann Druyan explore the origin, nature, and future of comets, and the exotic myths and portents attached to them. The authors show how comets have spurred some of the great discoveries in the history of science and raise intriguing questions about these brilliant visitors from the interstellar dark.

Were the fates of the dinosaurs and the origins of humans tied to the wanderings of a comet? Are comets the building blocks from which worlds are formed?

Lavishly illustrated with photographs and specially commissioned full-color paintings, Comet is an enthralling adventure, indispensable for anyone who has ever gazed up at the heavens and wondered why. 'SIMPLY THE BEST.' .The Times of London 'FASCINATING, EVOCATIVE, INSPIRING.' .The Washington Post 'COMET HUMANIZES SCIENCE. A BEAUTIFUL, INTERESTING BOOK.'

.United Press International 'MASTERFUL. SCIENCE, POETRY, AND IMAGINATION.'

.The Atlanta Journal & Constitution. Mysterious Traveler Once upon a time, the young Albert Einstein tried to imagine what it would be like to ride on a beam of light and what the universe would look like to that observer.

Writing in his 1985 book, Comet, author Carl Sagan takes the reader on another imaginary journey. This time the observer is riding aboard a wayward comet traveling from the Solar System's outer fringe, around the sun and back into deep space again, giving the reader a birds eye view of what you would see on such a Mysterious Traveler Once upon a time, the young Albert Einstein tried to imagine what it would be like to ride on a beam of light and what the universe would look like to that observer. Writing in his 1985 book, Comet, author Carl Sagan takes the reader on another imaginary journey. This time the observer is riding aboard a wayward comet traveling from the Solar System's outer fringe, around the sun and back into deep space again, giving the reader a birds eye view of what you would see on such a trip. Who knows where such 'flights of fancy' can lead? The former; to a paradigm changing theory. And the latter; to an in depth look at a strange visitor from the depths of space.

Part science, part history and, in the original hard-bound edition, a generous helping of classical and new art work. While the Kindle edition has the charts, graphs and many black & white illustrations the beautiful color paintings are either missing or rendered in B&W.

While this does not diminish Sagan's text in any way, it would have been a nice addition to the overall reading experience. You have to wonder what the publishers were thinking when they OK'd this treatment of both Cosmos and Comet for e-reader release. The text itself is stunning, Sagan's knowledge seems unlimited and his writing skills were never better. This edition is the 1997 update by co-author Ann Druyan to include any new findings (to that point) and theories on comets and astronomy but you may want to use this book as a jumping off point to more recent writings. The history of comets and how they interacted with human society is fascinating and Sagan takes you back to the beginning, to our earliest records of comet sightings. What are comets made of?

How are they formed? Follow the birth and life of our Mysterious Traveler on it's journey through the Solar System. The author covers the mechanics of how their orbits are created and the risk that comets may pose to our planet. If a large object, comet or meteor, ever struck the Earth it could have a devastating effect on our environment and all life, including humans. Has this ever happened? What is the connection between comets and meteorites?

Sagan covers all this and more in this classic science book. The book closes with a section of extreme speculation and philosophy that the author offers up for your consideration, take it for what you will, just keep an open mind. From Sagan's point of view the future has boundless possibilities. Comets may be an unlimited resource of water, minerals and energy that we can mine for use in space-construction or colonization of other planets. All it needs is the courage to take a course of action that will benefit us in the short run and future generations in the long run as well. Whether you're reading Comet for the science, history, or just for nostalgic reasons it's a worthwhile read.

So buy your ticket and hop aboard the Comet express. There's always room for another observer. I had no technical or formatting problems with this Kindle edition. Being the seventh Carl Sagan's book I've read,'Comet' was a book co-written by, of course, the late Great Carl Sagan and Ann Druyan in 1985 before the return of the historical comet Halley.

The book offers us a spectacular ride on the comet from its origins to the point when it gets close to the Sun and heads back to where it comes from. After that, nearly everything you might be curious or might not even imagine to ask about comets will lie on the pages; the histories, myths, the physical appea Being the seventh Carl Sagan's book I've read,'Comet' was a book co-written by, of course, the late Great Carl Sagan and Ann Druyan in 1985 before the return of the historical comet Halley. The book offers us a spectacular ride on the comet from its origins to the point when it gets close to the Sun and heads back to where it comes from. After that, nearly everything you might be curious or might not even imagine to ask about comets will lie on the pages; the histories, myths, the physical appearances, the compositions, impacts, and future influences of these wonderful visitors from the frozen interstellar darkness. The authors' visions for the future advantages of comets and asteroids for our space exploration raise many intriguing questions to the readers and make them wish that governments would unite for the sake of science, knowledge and the survival of human civilization. Opportunity, money and technology to reach that goal are already within our grasp, but everything else is up to us to decide whether we would waste the money on war or invest them in exploration for our long term benefits. 'Comets may act as the creators, the preservers, and the destroyers of life on Earth,' the authors argue, 'A surviving dinosaur might have reason to mistrust them, but humans might more appropriately consider the comets in a favorable light—as bringers of the stuff of life to Earth, as ocean-builders, as the agency that removed the competition and made possible the success of our mammalian ancestors, as possible future outposts of our species, and as providers of a timely reminder about large explosions and the climate of the Earth.'

Comets and asteroids could be extract as raw materials so that we wouldn't need to send them from earth, which would cost hundreds of millions of dollars, they could provide fuels, water and many other organic materials, making the exploration more bearable and reachable. Yes, the book was written 26 years ago. Despite being revised in 1997, many discoveries related to comets have been discovered and understood since then.

Ann Druyan

Yet, the book cannot be devalued; it can be an informative companion to the study of comet in our modern day. Rating: 6.5/10. The volume I read was not the revised version but the original which was released in 1985 just BEFORE Halley's Comet. Sagan obviously was trying to cash in on the interest in the comet. The problem with reading science books which are more than 20 years old is that much of the material is dated, incorrect, speculation, or irrelevant. So while Sagan offers much which is interesting there is none of the later research such as the 'Giotto' mission or the comet Shumaker-Levy which cr Rating: 6.5/10. The volume I read was not the revised version but the original which was released in 1985 just BEFORE Halley's Comet.

Sagan obviously was trying to cash in on the interest in the comet. The problem with reading science books which are more than 20 years old is that much of the material is dated, incorrect, speculation, or irrelevant. So while Sagan offers much which is interesting there is none of the later research such as the 'Giotto' mission or the comet Shumaker-Levy which crashed into Jupiter.

I'm not sure whether some of his theories were either proved or not proved.for example, the notion that extinctions occur on Earth roughly every 30 million years is caused by the 'bobbing' of the sun through the plane of the galaxy as it revolves around its centre. I did enjoy the book, and, yes, it does have lots of pictures and photos. However, as always happens when I read books like this I realize it is time to find a modern, up-to-date, latest theories text. Carl Sagen's purpose in writing this book is to inform people about comets, the history of their observations, the people who made a huge impact on our understanding of comets, where they come from, what they're made of, etc. The theme of course is comets.

The style of this book is an exposition because it is an explanation and analysis of comets to bring some clarity and understanding on comets. In my opinion it was very good. What I liked is that it didn't just spew scientific unorganized nons Carl Sagen's purpose in writing this book is to inform people about comets, the history of their observations, the people who made a huge impact on our understanding of comets, where they come from, what they're made of, etc.

The theme of course is comets. The style of this book is an exposition because it is an explanation and analysis of comets to bring some clarity and understanding on comets. In my opinion it was very good. What I liked is that it didn't just spew scientific unorganized nonsense at you and that it explored the history and future of the comet and our observations of them. What I didn't like is that in some of the chapters it started to talk about how the universe was made and for that reason I completely skipped over some chapters because they went against my beliefs.

If I could change anything I would take out the chapters that talked about how the universe was made. It is not like any book I've read. I give this book 4 out of 5 stars and I must warn you that since this book was published in 1985 some of the information is outdated. This could have been titled 'Comet Halley' and I would have been perfectly fine with that. I want to live to see Comet Halley in 2061 since I had recently been born when it passed by in 1985-86.

The amount of information pertaining to Edmond Halley and his infamous comet filled me with gratitude and now I know where the info for the most recent Cosmos television series came from. Near the end of the book, Sagan makes mention of future journeys into 'trans-Plutonian' space and of flying a craft t This could have been titled 'Comet Halley' and I would have been perfectly fine with that. I want to live to see Comet Halley in 2061 since I had recently been born when it passed by in 1985-86.

The amount of information pertaining to Edmond Halley and his infamous comet filled me with gratitude and now I know where the info for the most recent Cosmos television series came from. Near the end of the book, Sagan makes mention of future journeys into 'trans-Plutonian' space and of flying a craft to a comet, both of which have recently occurred, about 30 years from the time of publication.

Carl Sagan Quotes

I'm sure there is plenty of outdated information in this book but it's exciting to me to be able to live through it and learn where science has been, where it's going etc. It's hard to imagine that discovery of the Kuiper Belt, the end of the Soviet Union, the identification of the Chicxulub Crater as that of the comet or asteroid that caused the K-T extinction, and the arrival of Comet Hale-Bopp, were all events unknown to the authors at the time of their writing.

Had they known about these events it is certain they would have had a large impact (no pun) on how they constructed much of the book, at least the latter parts of it. Still, much of the book is well worth It's hard to imagine that discovery of the Kuiper Belt, the end of the Soviet Union, the identification of the Chicxulub Crater as that of the comet or asteroid that caused the K-T extinction, and the arrival of Comet Hale-Bopp, were all events unknown to the authors at the time of their writing. Had they known about these events it is certain they would have had a large impact (no pun) on how they constructed much of the book, at least the latter parts of it. Still, much of the book is well worthwhile even to today's reader since a large part of it deals with the history of comets and their discoverer's.

And Carl Sagan's phraseology rings so true at times it's almost as if you could hear him narrating it out loud. The photos and diagrams are also well worth it. I have to admit, if Cosmos was a mainstream and overall view of our universe and is as human species, each subsequent book I read from Sagan simply feels like an uncut version of one of the chapters of Cosmos. This one in particular is about Comets and you will learn everything- the history, the myth, the composition, the physics, the chemistry, the theory, the journeys now and and the future. It's a magnificent story written in typical Sagan and Druyan way. So if you're new to it - read Cosmos I have to admit, if Cosmos was a mainstream and overall view of our universe and is as human species, each subsequent book I read from Sagan simply feels like an uncut version of one of the chapters of Cosmos. This one in particular is about Comets and you will learn everything- the history, the myth, the composition, the physics, the chemistry, the theory, the journeys now and and the future.

It's a magnificent story written in typical Sagan and Druyan way. So if you're new to it - read Cosmos first. If you're not - why are you reading this review? Just get on with it!

I love the last two chapters which as every other books of Carl Sagan left me with something to ponder and reflect. I enjoyed the stories in the first few chapters especially the work of Halley. There are many new things in the middle chapters that I didn't know in details so I like the fact that I learnt new things here and there but some sections are a bit long and dry. I have stopped in the middle for a few months and resumed reading it when I ran out of book to read.

I'm glad I finished it s I love the last two chapters which as every other books of Carl Sagan left me with something to ponder and reflect. I enjoyed the stories in the first few chapters especially the work of Halley. There are many new things in the middle chapters that I didn't know in details so I like the fact that I learnt new things here and there but some sections are a bit long and dry. I have stopped in the middle for a few months and resumed reading it when I ran out of book to read. I'm glad I finished it since there are interesting things amidst the dry information until the end. In 1934, scientist Carl Sagan was born in Brooklyn, N.Y. After earning bachelor and master's degrees at Cornell, Sagan earned a double doctorate at the University of Chicago in 1960.

He became professor of astronomy and space science and director of the Laboratory for Planetary Studies at Cornell University, and co-founder of the Planetary Society. A great popularizer of science, Sagan produced th In 1934, scientist Carl Sagan was born in Brooklyn, N.Y. After earning bachelor and master's degrees at Cornell, Sagan earned a double doctorate at the University of Chicago in 1960. He became professor of astronomy and space science and director of the Laboratory for Planetary Studies at Cornell University, and co-founder of the Planetary Society. A great popularizer of science, Sagan produced the PBS series, ' Cosmos,' which was Emmy and Peabody award-winning, and was watched by 500 million people in 60 countries.

A book of the same title came out in 1980, and was on The New York Times bestseller list for 7 weeks. Sagan was author, co-author or editor of 20 books, including The Dragons of Eden (1977), which won a Pulitzer, Pale Blue Dot (1995) and The Demon-Haunted World: Science As a Candle in the Dark (1996), his hardest-hitting on religion. With his wife, he was co-producer of the popular motion picture, ' Contact,' which featured a feminist, atheist protagonist played by (1997). The film came out after Sagan's death, following a 2-year struggle with a bone marrow disease. Sagan played a leading role in NASA's Mariner, Viking, Voyager, and Galileo expeditions to other planets., in the epilogue to Sagan's last book, Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium (published posthumously in 1997), gives a moving account of Carl's last days: ' Contrary to the fantasies of the fundamentalists, there was no deathbed conversion, no last minute refuge taken in a comforting vision of a heaven or an afterlife.

For Carl, what mattered most was what was true, not merely what would make us feel better. Even at this moment when anyone would be forgiven for turning away from the reality of our situation, Carl was unflinching. As we looked deeply into each other's eyes, it was with a shared conviction that our wondrous life together was ending forever.' For his work, Dr. Sagan received the NASA medals for Exceptional Scientific Achievement and (twice) for Distinguished Public Service, as well as the NASA Apollo Achievement Award.

Asteroid 2709 Sagan is named after him. He was also awarded the Astronautics Award of the American Astronautical Society, the Explorers Club 75th Anniversary Award, the Medal of the Soviet Cosmonauts Federation, and the Masursky Award of the American Astronomical Society, (' for his extraordinary contributions to the development of planetary scienceAs a scientist trained in both astronomy and biology, Dr. Sagan has made seminal contributions to the study of planetary atmospheres, planetary surfaces, the history of the Earth, and exobiology. Many of the most productive planetary scientists working today are his present and former students and associates').

He was also a recipient of the Public Welfare Medal, the highest award of the National Academy of Sciences. Sagan was elected Chairman of the Division of Planetary Sciences of the American Astronomical Society, President of the Planetology Section of the American Geophysical Union, and Chairman of the Astronomy Section of the American Association for the Advancement of Science.

For twelve years he was the editor-in-chief of Icarus, the leading professional journal devoted to planetary research. He was cofounder and President of the Planetary Society, a 100,000-member organization that is the largest space-interest group in the world; and Distinguished Visiting Scientist, Jet Propulsion Laboratory, California Institute of Technology. In their posthumous award to Dr.

Sagan of their highest honor, the National Science Foundation declared that his ' research transformed planetary science his gifts to mankind were infinite.'