Summarize “A Sound of Thunder” in 3 sentences.

In 'A Sound of Thunder,' a science fiction short story set in 2055, time travel allows the common man to experience the past in ways never before thought possible. Eckels, an avid hunter, pays $10,000 to travel back to the age of dinosaurs to hunt a Tyrannosaurus rex.

Explanation:

   The story, "sound of Thunder" is science fiction story by Ray Bradbury; it took place in 2055. Eckels a hunter payed 10,000 to travel back in time to kill a colossal dinosaur (Tyrannosaurus Rex). The last sound of thunder was  from Travis's gun after he shot it. The way the story ended was on a cliff hanger, Ray Bradbury is known to ending his stories as cliff hangers.  We didn't know if Travis had committed (no life)  or shot Eckles.