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Exoplanets: Hidden Worlds and the Quest for Extraterrestrial Life

9780674976900
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“How do alien, faraway worlds reveal their existence to Earthlings? Let Donald Goldsmith count the ways. As an experienced astronomer and a gifted storyteller, he is the perfect person to chronicle the ongoing hunt for planets of other stars.”—Dava Sobel

Astronomers have recently discovered thousands of planets that orbit stars throughout our Milky Way galaxy. With his characteristic wit and style, Donald Goldsmith presents the science of exoplanets and the search for extraterrestrial life in a way that Earthlings with little background in astronomy or astrophysics can understand and enjoy.

Much of what has captured the imagination of planetary scientists and the public is the unexpected strangeness of these distant worlds, which bear little resemblance to the planets in our solar system. The sizes, masses, and orbits of exoplanets detected so far raise new questions about how planets form and evolve. Still more tantalizing are the efforts to determine which exoplanets might support life. Astronomers are steadily improving their means of examining these planets’ atmospheres and surfaces, with the help of advanced spacecraft sent into orbits a million miles from Earth. These instruments will provide better observations of planetary systems in orbit around the dim red stars that throng the Milky Way. Previously spurned as too faint to support life, these cool stars turn out to possess myriad planets nestled close enough to maintain Earthlike temperatures.

The quest to find other worlds brims with possibility. Exoplanets shows how astronomers have broadened our planetary horizons, and suggests what may come next, including the ultimate discovery: life beyond our home planet.

Category:
Science
Cover:
Hardback
Edition Number:
1
ISBN:
9780674976900
Pages:
272
Author:
Goldsmith Donald
Publisher:
HARVARD UNIVERSITY PRESS
Release Year:
2018

Donald Goldsmith is an astronomer and President of Interstellar Media. He is the author of Origins: Fourteen Billion Years of Cosmic Evolution (with Neil deGrasse Tyson) and The Runaway Universe, and has received the American Institute of Physics Science Communication Award and the Annenberg lifetime award for astronomy popularization from the American Astronomical Society.

Prologue

1. The Long Search for Other Solar Systems

2. Cosmic Distances

3. Early Quests for Exoplanets

4. The Breakthrough: Measuring Radial Velocity Precisely

5. Finding Exoplanets by Their Transits

6. Directly Observing Exoplanets

7. Detecting Planets with Einstein’s Lens

8. Two Minor Methods for Finding Exoplanets

9. A Gallery of Strange New Planets

10. What Have We Learned?

11. How Planets Form with Their Stars

12. Habitable Planets and the Search for Life

13. Future Approaches to Hunting Exoplanets

14. Proxima Calls: Can We Visit?

Notes

Further Reading

Acknowledgments

Index

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