Probability 1

Name: Probability 1
Price: 2.99 USD
Availability: InStock
Rating: 4.4 (31 reviews)
Author: Amir D. Aczel Ph.D.

by Amir D. Aczel Ph.D.

Nonfiction

4.4 (31)

$2.99Deal79% off peak

Last checked: Jul 13, 2026

Price history: $0.75 – $14.43

Good deal — this title is discounted today.

Price range: $0.75 – $14.43

Buy on Amazon - $2.99

0 readers are tracking this book's price

Fans of these authors will like this...

Carl Sagan
Neil deGrasse Tyson
Brian Greene

Fans of these books will like this...

The Fabric of the Cosmos
A Brief History of Time
Pale Blue Dot

Perfect for you if...

You're curious about whether we're alone in the universe and want the science, not just speculation.
You enjoy books that blend hard maths with big cosmic questions (think Carl Sagan energy).
You like non-fiction that reads like a story, following scientists asking the questions that matter most.

Maybe not for you if...

You want definitive proof of alien life—this is probability and inference, not a discovery announcement.
You prefer pure narrative over equations and statistical reasoning.
You're looking for a short book—this is a comprehensive tour of cosmology, biology, and maths combined.

About this book

For millennia, visionaries and writers have argued that intelligent life exists elsewhere in the universe. Now, with discoveries from the Hubble Telescope, data from Mars, and knowledge of life in extreme environments, scientists are pursuing this question. Amir D. Aczel draws together scientific discoveries and applies probability theory to argue for the existence of intelligent life beyond Earth. Probability 1 combines cosmology, mathematics, and biology to explore how scientists approach fundamental questions about life in the universe. The book examines the probability that intelligent life exists elsewhere, presenting the scientific evidence and reasoning that support this possibility.

Get the best deal every time

We track price drops, sale patterns, and predict when this book will go on offer next.

Price History

Kindle price over time. Green zones = periods when the book was free.

$0.75 – $14.43

Currently on sale at $2.99 — 79% off peak. Price has dropped 29 times over the last 6 years. Goes on sale roughly every 28 days. Typically stays discounted for 81 days.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

Currently around #187K in the Kindle store — a niche title.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

Currently 4.4★ from 31 reviews

Review activity has been quiet recently. Rating has remained stable at 4.4 over the tracking period.

Sale Prediction

Actual Predicted

This book is currently discounted at $2.99. It typically returns to around $14.43.

Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.

Curious how prices and deals move across the whole Kindle store? See the latest findings in The Kindle Report