The Astronomy Book by Jacqueline Mitton, Robert Dinwiddie (+3 co-authors) (2017, ISBN 978-1-4654-6418-7)

 Contains a series of short articles about various Astronomy related topics.  Planets, Stars, Galaxies, etc. The articles are arraigned by date, so the first is about Aristotle, the last is about LIGO.

Aristotle believed the Earth was the center of the Universe. (He was wrong.)

 Since the dawn of humankind, people have looked upward to the heavens and tried to understand them. This encyclopedia takes you on an expedition through time and space to discover our place in the universe.

 History of Astronomy 

Purchased 2020-01-24 from Powells (Burnside) for $12.98
 

Welcome to the Universe by Neil deGrasse Tyson, Michael A Strauss, J. Richard Gott (2016, ISBN 978-0-691-15724-5)
Subtitle-- An Astrophysical Tour.
Very interesting popular science book. It is divided into three sections-- I) Stars, Planets, and Life II) Galaxies III) Einstein and the Universe.

One chapter explains why Pluto is no longer considered a planet. Another chapter use the Drake equation to estimate the number of  active, communicative extraterrestrial civilizations in the Milky Way galaxy. Time travel is explained.
The famous equation E=MC² is explained. Finally, a chapter is devoted to describing the ultimate fate of the Universe.
Christmas present 2016.

Cosmos by Carl Sagan. (1980, ISBN 0-394-50294-9) Based on the the 13-part TV series of the same name. That TV series was recently updated with a newer version with Neil deGrasse Tyson. A great book. Contains a lot of interesting stuff, a bit out of date in terms of space exploration (a lot has happened since it was written in 1980.) Still worth reading ( you can find used copies very cheap on Amazon.) I got my copy back in the 1980s.
Contains a proof that the square root of 2 is irrational. Discusses the Googol and the Googolplex. This book contains much information about science and the history of the world, etc.

Venus In Transit by Eli Maor. 2004, ISBN 0-691-11589-3. This book is about astronomy, in particular the transit of Venus. The planet Venus has been known to man since ancient times, because it is visible to the naked eye. Venus is one of the seven wanderers (Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn.) However, the transit of Venus wasn't seen by man (as far as anyone knows) or even imagined until mathematical astronomy predicted that it should happen. Once people knew that this should happen they started looking for it and it was first observed in England by Jeremiah Horrocks on 24 November 1639. This book tells the story of how the transit of Venus was predicted and the various attempts at viewing it. (Note: the next transit of Venus will be on June 6, 2012. After that it doesn't occur again until the year 2117.) Like his other books, I found this book enjoyable to read. It even has a little bit of trigonometry when explaining what the scientists were trying to do by viewing the transit (measuring the distance to the sun, etc.) See parallax and parsec. I purchased this book from Shell Creek Books, on 3-20-2011, for 6.99.