cosmic year Directory References Discover How Many Countries Are There in the World? Which Religion Is the Oldest? All 119 References in “We Didn’t Start the Fire,” Explained 6 Animals That Eat Their Mates Where Is “Old Zealand”? 10 Great Sports Rivalries What Comes After Terabyte? Contents cosmic year chronology Ask the Chatbot a Question Ask the Chatbot a Question Learn about this topic in these articles:definition and length In yearA cosmic year is the time (about 225 million years) needed for the solar system to revolve once around the centre of the Milky Way Galaxy.Read More
