Explore our new BookBrowse Community Forum!

Summary and Reviews of Alien Earths by Lisa Kaltenegger

Alien Earths by Lisa Kaltenegger

Alien Earths

The New Science of Planet Hunting in the Cosmos

by Lisa Kaltenegger
  • BookBrowse Review:
  • Critics' Consensus:
  • First Published:
  • Apr 16, 2024, 288 pages
  • Rate this book

  • Buy This Book

About This Book

Book Summary

Riveting and timely, a look at the research that is transforming our understanding of the cosmos in the quest to discover whether we are alone.

For thousands of years, humans have wondered whether we're alone in the cosmos. Now, for the first time, we have the technology to investigate. But once you look for life elsewhere, you realize it is not so simple. How do you find it over cosmic distances? What actually is life?

As founding director of Cornell University's Carl Sagan Institute, astrophysicist Lisa Kaltenegger has built a team of tenacious scientists from many disciplines to create a specialized toolkit to find life on faraway worlds. In Alien Earths, she demonstrates how we can use our homeworld as a Rosetta Stone, creatively analyzing Earth's history and its astonishing biosphere to inform this search. With infectious enthusiasm, she takes us on an eye-opening journey to the most unusual exoplanets that have shaken our worldview - planets covered in oceans of lava, lonely wanderers lost in space, and others with more than one sun in their sky! And the best contenders for Alien Earths. We also see the imagined worlds of science fiction and how close they come to reality.

With the James Webb Space Telescope and Dr. Kaltenegger's pioneering work, she shows that we live in an incredible new epoch of exploration. As our witty and knowledgeable tour guide, Dr. Kaltenegger shows how we discover not merely new continents, like the explorers of old, but whole new worlds circling other stars and how we could spot life there. Worlds from where aliens may even be gazing back at us. What if we're not alone?

Chapter 1
At the Brink of Finding Life in the Cosmos



These worlds in space are as countless as all the grains of sand on all the beaches of the Earth. Each of those worlds is as real as ours and every one of them is a succession of incidents, events, occurrences which influence its future. Countless worlds, numberless moments, an immensity of space and time.

—Carl Sagan, Cosmos

The First Images from a New Spacecraft

The foam on my Portuguese espresso tastes a little bitter, but I hardly notice. For the past hour I've been staring at the images on my computer screen, a live feed from NASA's recently launched James Webb Space Telescope (JWST). The screen is dark now, and my own thoughts are wandering into that darkness, into what mysteries of the cosmos it will reveal.

Watching the flawless launch of the JWST on a late-December day in 2021, scientists from every continent focused intently on each step of the launch. From liftoff to observations, JWST had 344 single points of potential ...

Membership Advantages
  • Reviews
  • "Beyond the Book" articles
  • Free books to read and review (US only)
  • Find books by time period, setting & theme
  • Read-alike suggestions by book and author
  • Book club discussions
  • and much more!
  • Just $45 for 12 months or $15 for 3 months.
  • More about membership!

Reviews

BookBrowse Review

BookBrowse

The writing is woven with many scientific terms but is delivered in a highly digestible format. Marvelous and revelatory, Alien Earths will get you excited for our burgeoning, promising efforts to reach cosmic life on Earth-similar exoplanets. So much has already been learned in just a few decades, and we're only getting started. Thanks to Dr. Lisa Kaltenegger and her fellow scientists, we are closer than ever to meeting life on another planet. It's only a matter of patience, perseverance, and time...continued

Full Review Members Only (727 words)

(Reviewed by Christine Runyon).

Media Reviews

Booklist (starred review)
Exquisite book is for all who have peered into the night sky pondering the mysteries of the universe … a mind-bending journey.

Kirkus Reviews (starred review)
This book is an excursion that turns the esoteric field of stellar cartography into an engaging and entertaining story...Kaltenegger's exploration of nearby and faraway space is absorbing, informative, and entertaining.

Publishers Weekly (starred review)
A stellar exploration … Readers will be riveted.

Author Blurb Alastair Reynolds, science fiction writer and former ESA scientist
An engaging and personal book that couldn't be more up to date. Read Alien Earths, and feel your cosmic perspective shift just a little on its axis.

Author Blurb Bill Nye, CEO, The Planetary Society (and former student of Carl Sagan)
If you've ever wondered if we're alone in the cosmos― and Dr. Kaltenegger is certain you have, start with Alien Earths. With her combined degrees in astronomy and engineering, she presents a primer on the geology, physics, chemistry, biology, and ultimately mathematics of places just like Earth― which she sets about seeking every (Earth) day. She'll show you; the answer is in the sky, our window on the cosmos. Read on!

Author Blurb Michel Mayor, Winner of the Nobel Prize in Physics, Professor Emeritus, Department of Astronomy, University of Geneva
Do you want to prepare yourself for the next 'Copernican revolution'? Then read Lisa Kaltenegger's book! Fascinating.

Author Blurb Neil deGrasse Tyson, Astrophysicist, American Museum of Natural History
In Alien Earths, Lisa Kaltenegger, a skillful educator, offers first-hand access to her expertise on the search for planets in the universe, and the life they may contain. Along the way, Lisa's breezy narrative style invites you to experience with her the challenges and joys of being a scientist on the frontier of discovery.

Author Blurb Steven Strogatz, Professor of Mathematics, Cornell University, and author of Infinite Powers
Professor Lisa Kaltenegger takes us along on the quest to solve one of the greatest mysteries of existence: Are we alone in the universe? In Alien Earths, Kaltenegger―one of the pioneers leading the way―reveals what we've already discovered, and even more breathtakingly, what we might find.

Reader Reviews

Membership Advantages
  • Reviews
  • "Beyond the Book" articles
  • Free books to read and review (US only)
  • Find books by time period, setting & theme
  • Read-alike suggestions by book and author
  • Book club discussions
  • and much more!
  • Just $45 for 12 months or $15 for 3 months.
  • More about membership!

Beyond the Book



Star Trek & Space Exploration

From the 17th century on, Johannes Kepler, Mary Shelley, Edgar Allan Poe, Jules Verne, HG Wells, and Edgar Rice Burroughs were just a few artists who contributed to a burgeoning awakening of the collective imagination, melding scientific and cosmic theories with myth and character, shaping something entirely new — science fiction.

How science fiction evolved from simple stories into a huge pop culture phenomenon could be an article unto itself. But it's worth noting that in 1966, science fiction was transformed forever when Star Trek premiered on NBC. In the show, the Starfleet organization was conceived with the goal of exploring and learning from our neighboring galaxies in the universe. Sound familiar? As it turns out, NASA was ...

Membership Advantages
  • Reviews
  • "Beyond the Book" articles
  • Free books to read and review (US only)
  • Find books by time period, setting & theme
  • Read-alike suggestions by book and author
  • Book club discussions
  • and much more!
  • Just $45 for 12 months or $15 for 3 months.
  • More about membership!

Read-Alikes

Read-Alikes Full readalike results are for members only

If you liked Alien Earths, try these:

We have 5 read-alikes for Alien Earths, but non-members are limited to two results. To see the complete list of this book's read-alikes, you need to be a member.
Search read-alikes
How we choose read-alikes
Membership Advantages
  • Reviews
  • "Beyond the Book" articles
  • Free books to read and review (US only)
  • Find books by time period, setting & theme
  • Read-alike suggestions by book and author
  • Book club discussions
  • and much more!
  • Just $45 for 12 months or $15 for 3 months.
  • More about membership!

Top Picks

  • Book Jacket: Graveyard Shift
    Graveyard Shift
    by M. L. Rio
    Following the success of her debut novel, If We Were Villains, M. L. Rio's latest book is the quasi-...
  • Book Jacket: The Sisters K
    The Sisters K
    by Maureen Sun
    The Kim sisters—Minah, Sarah, and Esther—have just learned their father is dying of ...
  • Book Jacket: Linguaphile
    Linguaphile
    by Julie Sedivy
    From an infant's first attempts to connect with the world around them to the final words shared with...
  • Book Jacket
    The Rest of You
    by Maame Blue
    At the start of Maame Blue's The Rest of You, Whitney Appiah, a Ghanaian Londoner, is ringing in her...

Members Recommend

  • Book Jacket

    Pony Confidential
    by Christina Lynch

    In this whimsical mystery, a grumpy pony must clear his beloved human's name from a murder accusation.

Who Said...

Tread softly because you tread on my dreams.

Click Here to find out who said this, as well as discovering other famous literary quotes!

Wordplay

Solve this clue:

F the M

and be entered to win..