Cosmic Queries – Alien Worlds and Extrem...

Did the Milky Way used to be a quasar? On this episode, Neil deGrasse Tyson and comic co-host Chuck Nice explore quasars, the high energy universe, and the movie we’re making of the night’s sky with astrophysicist & host of PBS Space Time, Matt O’Dowd. NOTE: StarTalk+ Patrons can ... Show More

Why is the past different from the future? Neil deGrasse Tyson and comedian Chuck Nice explore the universe’s deepest questions like why is there anything, how we know we are in the real present, if there could be a unified theory of physics and more with theoretical physicist Se ... Show More

Are all galaxies redshifting away? Neil deGrasse Tyson and comedian Negin Farsad tackle a grab bag of fan questions covering cosmic infrastructure, redshift, werewolves, gravitational waves, and the nature of time itself. NOTE: StarTalk+ Patrons can listen to this entire episode ... Show More

There's perhaps no bigger "What If" that will ever be asked. As long as we have been able to look up at the stars and understand the vastness of space, humans have pondered whether we are indeed alone in the universe. But perhaps no one has "been on the case" in a more serious wa ... Show More

Get 20% off your first monthly box when you sign up at boxofawesome.com and enter the code “whatif” at checkout. If you’re ready to take action and prevent hair loss, go to keeps.com/whatif to receive your first month of treatment for free. Is the truth really "out there"? ... Show More

Go to www.greenchef.com/WHATIF90 and use code WHATIF90 to get $90 off, including free shipping. It's been a long strange journey for Nobel Prize winning astronomer Didier Queloz. In 1995, he and his team discovered the first "Exosolar Planet" i.e. an Earth-like planet orbiting a ... Show More

So imagine that all of the reports of UFO's, visitations and alien abductions were true...but sort of not? Confused? How about instead of "aliens" being alien, they were actually humans travelling back in time from the future to study their origins as a species? This is the thesi ... Show More

Sign up for the Great Courses Plus today and enjoy the first month for free: https://bit.ly/podcast-great-courses-plus We know the history of this planet and asteroids isn't good...just ask the dinosaurs. So, what if we were faced with the same situation now? How much time wou ... Show More

Sign up for Policy Genius today: https://bit.ly/policy-genius-what-if-discussed The Hubble telescope has helped discover over 4100 exoplanets in recent years, some of those being categorized as "Super Earths". But what exactly does that mean? What makes them so "Super"? Are th ... Show More

In 1991, 8 people walked into the first ever biosphere project, committed to live there, grow their own food, recycle their waste and sustain themselves on limited amounts of oxygen for 2 years. So who better to ask "What If we lived in a closed biosphere than Jane Poynter, one o ... Show More

We ask some of the world’s top thinkers in science, astronomy, technology, academia and futurism to ponder some of our most popular What If videos. What If half the Earth’s population was wiped out? What If you fell into a pool of liquid nitrogen? What If we lived in a Galactic Z ... Show More

Sign up for the Great Courses Plus today and enjoy the first month for free: https://bit.ly/podcast-great-courses-plus The world was rocked recently by the announcement that signs of life might have been discovered on Venus? Unbelievable. Is the hottest planet in the Solar Sys ... Show More