This is one of my favorite books ever. Short stories begin with scientific theories of the origins of the universe, and turn into fantastic and silly accounts by someone who's been around since the universe began. Full of beautiful and absurd imagery - Calvino had such a great imagination.
Heard about this book from another book titled "500 Must Read Books". Absolutely loved it. Calvino takes facts about the universe in its earlier days and creates highly imaginative, unique and fun short stories.