From the creation of all matter 13.8 billion years ago, to the formation of the Milky Way Galaxy some 12 billion years ago, the birth of the Sun and Solar System 4.6 billion years ago, the emergence of microbial life on Earth 3.5 billion years ago, the evolution of complex creatures 500 million years ago, the beginning of life on land 300 million years ago, the reign of dinosaurs which began 240 million years ago and ended 66 million years ago, and the rise of hominids just a few million years ago. (Astronomy: A Beginner's Guide, by William H. Waller. 2022, Chap 14)
