The book was written by Pierre-Yves Bely, Carol Christian, and Jean-Rene Roy, and published in English by Cambridge University Press in 2010.

It contains some 250 questions, which The Science Teacher states each are answered with a "concise and well-formulated essay that is informative and readable."

The Science Teacher summarizes by stating that each question is likely to be thought of by a student, and that "the answers are informative, well constructed, and thorough".

[2] The book covers information about the planets, the Earth, the Universe, practical astronomy, history, and awkward questions such as astronomy in the Bible, UFOs, and aliens.

[1] Also covered are subjects such as the Big Bang, comprehension of large numbers, and the Moon illusion.