The book "A Blue Gem in Space" places Earth at the local astronomical center, with the Sun, its parent star, on one side and its sibling planets and cousin exoplanets on the other.

It narrates how 100 years of great discoveries have led to the understanding of the life-giving star, the Sun, on one side and the planetary system on the other. At the same time, it also mentions the recent major discoveries of Earth's relatives, exoplanets, which reflect and influence its glaring solitude in space.

The book is aimed at the thoughtful general public who may not possess technical knowledge, and thus it is primarily written in a relaxed manner, without mathematics and difficult advanced concepts, so that everything is explained simply and in an understandable way.