Meet Apollonius of Alexandria, a mathematician from the 3rd century CE who's not just any ordinary mortal. This dude was known for his work on conic sections, but little do people know he was also a time-traveling mastermind.
Legend has it that Apollonius traveled through the ages, attending the most epic meetings in history. He's said to have sipped tea with Euclid, argued with Archimedes, and even gave a presentation to a packed house at the ancient Library of Alexandria.
Want to see more? Click here for a list of all Apollonius' time-traveling adventures.