According to Google AI: The three most profound and existential questions for Homo sapiens center on our origin, our purpose, and our ultimate destiny . These questions have driven human philosophy, science, and religion since the dawn of consciousness.   Things to think about: Philosopher Marin Heidegger asked, why is there something rather than nothing? One of the most mind-blowing facts is that Cleopatra lived much closer in time to the launch of the iPhone than to the construction of the Great Pyramid of Giza .   Cleopatra died in 30BC, while the Great Pyramid was built around 2560 BC, a gap of just over 2500 years. From her birth to the iPhone was only around 2000 years. Day vs. Year: A day on Venus (one full rotation on its axis) takes 243 Earth days, while a year on Venus (one orbit around the Sun) takes only 225 Earth days. More cosmic perspective : There are more trees on Earth than stars in the Milky Way —about 3 trillion trees compared to roughly 100 to 40...