Exoplanets: Worlds Without End, by Scientific American Editors
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Exoplanets: Worlds Without End, by Scientific American Editors
Ebook PDF Exoplanets: Worlds Without End, by Scientific American Editors
In the two decades since astronomers first discovered the existence of a planet outside of our solar system, "exoplanetology" has become the hottest specialty in astrophysics. Scientists young and old, inspired by the thought of finding either another habitable world or the Holy Grail of space exploration, life itself, flocked to be part of this burgeoning field. With so much brainpower on hand, it's no wonder that investigative techniques advanced more quickly than anyone would have thought. To date, more than 1,000 exoplanets have been found, and in this eBook, Exoplanets: Worlds Without End, we delve into this quest that sometimes sounds more like science fiction than science. Section 1, "Exo-Search," sets the stage and outlines how astronomers are looking for new worlds: the various techniques, how they've improved to date and plans for upcoming missions. Sections 2 through 5 analyze the discoveries, often both controversial and strange. Section 3 focuses on the race to find other Earth-like planets. With excitement at an all-time high, author Ron Cowen cautions against publishing too quickly out of optimism. In "Noisy Stars May Create Phantom Planets," Cowen describes how stellar activity can mimic the signs of tiny exoplanets. Section 4 takes on the real oddballs. They may be remnants of gas giants whose atmospheres were stripped away, as in the piece "The Bones of Giants," or have alien chemistries. Some trace their course around white dwarfs, the results of a second generation of planets forming around old stars. Section 5 asks if there's life out there. In "Anybody Home?" John Matson describes the search for the chemical signatures that scientists think are telltale signs that we're not the only living things in this part of the universe. So far, we're still alone out here, but in a field where the discoveries are coming thick and fast, it's exciting to think that it could all change tomorrow.
Exoplanets: Worlds Without End, by Scientific American Editors- Amazon Sales Rank: #70777 in eBooks
- Published on: 2015-06-15
- Released on: 2015-06-15
- Format: Kindle eBook
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Most helpful customer reviews
0 of 0 people found the following review helpful. Individualization of stellar and planetary systems. By Ralph J. Turner The main point I got from this short book is that our Solar System is not a typical one or an average one. Most planetary systems appear to have very large gas giants like Juniper close to their stars, orbiting in short periods. Of course these are the most easily spotted through a variety of methods spelled out in the book. Rarely if at all can we see these planets directly. So, although most stars likely have planets and moons around those planets they don't have the pattern of small planets near the sun and larger gaseous planets further from it. And besides this generalization, the main point is that each star system is different. We already knew that many stars are double or triple revolving around each other but now we know that each system is individual in its character. To find an Planet with near the size of Earth orbiting a star more or less the mass of our Sun has not happened yet and evidently will be a rare find. And if we expect to explore, not to mention, colonize these planets we are in for some drastic changes of environment, even if we do find one more or less like ours. The chemical makeup of the planet, the illumination character of the star as well as the gravity variations will make adaptation a high-tech proposition. The drama of this exploration which is going on in the 21st Century and probably for the third millennium is one to watch however and changes every day. This book will be out of date shortly but the excitement of the discoveries is well laid out and this is a permanent record of that process in its early days (now).
0 of 0 people found the following review helpful. Very interesting, though some articles should be updated By Jorge Santos Simón The subject of exoplanets is really exciting, and this little funny book gives you a good glimpse to it though a series of interesting articles, But do not expect a coherent, historical review of the ascent and successes of this research area. I remove the 5th star because of this and even more because some articles are very old and outdated; they should be replaced or rewritten in the light of new knowledge.
0 of 0 people found the following review helpful. Five stars By rreader10 "Articles from the Scientific American" might sound a bit dry, but I found this quite the opposite. Update information presented in an interesting and very readable way. Highly recommended to anyone interested in the subject.
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