1) The largest known dinosaur, Argentinosaurus, weighed around 70-100 tons and measured up to 100 feet in length.

2) The musical "The Phantom of the Opera" has been running in London's West End since 1986, making it the longest-running musical in history.

3) Marilyn Monroe, born Norma Jeane Mortenson, was an iconic American actress, model, and singer, known for her beauty, charisma, and tragic personal life.

4) Aztec mythology, originating from ancient Mesoamerica, includes deities like Quetzalcoatl, Huitzilopochtli, and Tlaloc. It explores concepts of creation, sacrifice, and the cyclical nature of time, with intricate cosmology and rituals forming a significant part of Aztec religious beliefs and practices.