In this lesson, students create a timeline of world events from 1905 until 2006. Students locate key dates from the Cosmic Times poster series and determine world events that fit into the three story strands of Cosmic Times, as well as, the categories of Science, Culture, and World Events/Politics. The timeline allows students to see how the technology and data that scientists have used over the past 100 years have contributed to the cosmological knowledge and understanding that we have today. Students can also observe the historical significance of scientific discoveries over time, and place them within the context of world events. This activity is from the Cosmic Times teachers guide and uses all six Cosmic Times Posters.