Review of Aliens and Humans

[Prince Sachin]

[Following is a volunteer review of "Aliens and Humans" by Harry Keller.]

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5 out of 5 stars

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This is my first book in this genre, and I found this book exciting since I have great curiosity for the vast space around us. Harry E. Keller provides readers with an extensive and captivating investigation about existence and universe fundamentals through his work “Aliens and Humans.”

The author uses cosmology and biology together with astrophysics to examine Fermi’s Paradox alongside the ancient pursuit of understanding why humans exist. Through the usage of simple language, the book presents scientific information and speculative reasoning, which succeeds in being both explanatory and mentally engaging.

There is nothing to dislike in this book, and I did not come across any shortcomings. The book consists of cosmology, biology, finding civilization, velocity, choices, and expansion sections that present different viewpoints on understanding universal vastness. In his initial chapters, Keller presents both the Big Bang theory coupled with astronomical constant research alongside lunar galactic development before shifting his focus to practical life origin calculations used by those pursuing extra-terrestrial intelligence. The analysis of exoplanet discoveries along with current detection limitations emerges as a remarkable aspect of his research because it shows both opportunities and hurdles existing in this scientific domain.

What I liked the most in this book is that the author presents complex scientific concepts in the simplest way. He uses a familiar speaking style throughout his work to help readers easily examine cosmic objects without feeling overwhelmed. Within the first eight pages, he presents his study on gravitational and electrical forces before moving on to his general cosmological theories. On page 14 Keller uses his domestic metaphor of stars as sand grains to illustrate stellar abundance, whereas page 33 explains the technical difficulties of exoplanet discovery.

I loved the Aliens chapter for its clever humor—“Alien visitations will be proven when one appears at someone’s figurative door: ‘Knock, knock.’ ‘Who’s there?’ ‘Alien.’ ‘Alien who? Come on. How many aliens do you know?” I laughed so hard reading this. The book was professionally edited and I did not find any errors. This book earns 5 out of 5 stars from me for its humor and indepth knowledge it provides.

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Aliens and Humans
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