23. Are Aliens Just Time Traveling Humans? (feat. Isaac Arthur)

<p>Look, we’re not smart enough to explain the physics of time travel to you all. But thankfully Isaac Arthur is! So let’s explore the big question of if time travel is even physically possible before we answer the main question plaguing our minds: are aliens just time traveling humans?</p> <p>Check out <a href='https://youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g'>Isaac Arthur on YouTube!</a></p> <p>Subscribe to It's Probably (not) Aliens for weekly episodes about cool ancient history! And give us a 5-star review if you have the time. It would really help us out!</p> <p>Suggest topics for us to tackle: <a href='http://ProbsNotAliens.com'>http://ProbsNotAliens.com</a></p> <p>Follow the show on Twitter: <a href='https://twitter.com/ProbsNotAliens'>https://twitter.com/ProbsNotAliens</a></p> <p>Tristan Johnson: <a href='https://stepbackhistory.com/'>https://StepBackHistory.com</a></p> <p>Scott Niswander: <a href='https://twitter.com/scottniswander'>https://twitter.com/scottniswander</a></p> <p>Music by Rod Kim: <a href='https://rodkim.com/'>https://RodKim.com</a></p> <p>Cover art by Skutch: <a href='https://twitter.com/Skutchdraws'>https://twitter.com/Skutchdraws</a></p>