"Packing for Mars" explores the curious and often humorous aspects of space travel, focusing on the day-to-day life of astronauts and the bizarre challenges they face in zero gravity. The book delves into the nitty-gritty of space exploration, from the complications of personal hygiene and bathroom logistics to the psychological and physical trials of living in confined, alien conditions far from Earth. Through interviews with astronauts, scientists, and mission staff, the narrative reveals the less glamorous but utterly fascinating side of space travel, shedding light on human resilience and ingenuity in the most extreme environments.

The book is a memoir of a young boy's life in Havana, Cuba, during the 1950s, just before and during the Cuban Revolution. It vividly depicts the boy's privileged, idyllic childhood filled with joy and adventure, which is abruptly disrupted by the political upheaval that leads to his exile to the United States. The narrative is a poignant exploration of loss, identity, displacement, and the enduring emotional impact of childhood experiences.