Many of Bradbury's stories that deal with space travel were written just after the development of the atomic bomb. Also a temporal reference is the idea of fleeing a nuclear situation. Written just about a decade before man first walked on the moon, Bradbury anticipated the excitement around space travel and exploration. Bradbury's fascination with space travel takes place in the midst of the beginning of the space race. There are threats of bombs and the planet is in the midst of war, driven to this existence because of an over reliance on technology, but ironically it is this technology that enables them to travel to Mars. In the case of travel to Mars, the Earthmen are typically fleeing the potential destruction of Earth. Space travel is the primary theme of the short stories that were originally published in The Martian Chronicles, such as 'The Million Year Picnic,' and 'Dark They Were, and Golden Eyed.' 'All Summer in a Day,' also discusses space travel, but the setting is Venus instead of Mars. How do their actions affect the others that they live with? Bradbury is able to raise all of these questions through his novel discussion of time travel in his fantasy literature. The reader must ask the questions, 'How are my actions affecting the people who will come after me? Am I leaving the world a better place for them?' Not only must one examine their relationship with the future, but also their relationship with the people around them. Bradbury's discussion of the ripple effect forces the reader to consider his or her own place in the world and their responsibilities for future generations. He plays with the idea of 'the ripple effect,' where even the minutest events in the past can have drastic repercussions for the future. Time travel features predominantly in Bradbury's famous story, 'A Sound of Thunder,' where he explores the idea of time travel as well as the possible repercussions of entering the past. Additionally, the family in 'The Veldt' ends up imploding because of their technologically advanced home, and this is the case with many of the characters in Bradbury’s short stories, whether on a physical or emotional level. The Murderer has tried to destroy the technology that has interfered in his life, and the Pedestrian has actively tried to avoid technologies encroachment. Many of the characters are either fleeing technology, destroyed by it, or have taken a role in destroying technology. The Earth has imploded because of humanity’s over-reliance on gadgets, and weapons have proliferated to a point where mutual destruction is nearly ensured on Earth. In his stories from the Martian Chronicles in particular, humans have left Earth for Mars in hope of a better and more promising future. Technological Innovationīradbury has been accused of being against technology, and he is certainly critical of the technology that features in his short stories. In all of these works, Bradbury forces the reader to consider his or her own beliefs about censorship and the risks associate with it. While in some cases Bradbury clearly condemns censorship, his thoughts are murkier in the case of 'The Flying Machine' when they apply to undirected technological development.

In 'The Murderer' and 'The Pedestrian,' the authorities have censored ways of thinking and being, like the Murderer's dislike of technology gadgets and the Pedestrian's insistence on walking rather than spending time in front of a television screen.

Censorship applies to censorship of literary works, behavior, and technology. In this collection, censorship is a major theme in 'The Murderer,' 'The Exiles,' 'The Pedestrian,' and 'The Flying Machine,' and it plays a more minor role in his other stories. Bradbury is perhaps best known for his discussion of censorship in his full-length work, Fahrenheit 451, but he also uses his short stories to address this theme.

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