Calculating The Cosmos by Ian Stewart (2016, ISBN 978-0-465-09610-7)
Subtitle-- How Mathematics Unveils The Universe.

Talks about the mathematics of astrophysics from gravity to multiverse.  Excellent read. Despite the title, there is very little math. The book mostly talks about the math used to calculate various things.

Received as Christmas present 2016.

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.