Alien Sightings with David Spergel

Is our universe an inevitable outcome of the laws of physics? Neil deGrasse Tyson and comic co-host Chuck Nice sit down with theoretical physicist Brian Greene to discuss the Many-Worlds Interpretation, the structure of the multiverse, levels of infinity, and respond to cosmic qu ... Show More

Where does the wind come from? What is a sonic boom? Neil deGrasse Tyson and Chuck Nice explain things you thought you knew about sonic booms, daily temperatures, and how wind works. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkm ... Show More

Are we living inside a computer simulation? Is artificial intelligence truly conscious? And what happens to us when we die? Neil deGrasse Tyson and cohost’s Chuck Nice and Gary O’Reilly tackle more questions from inside the StarTalk team. NOTE: StarTalk+ Patrons can listen to thi ... Show More

<p>Hottest astrophysicist of all-time Neil deGrasse Tyson joins the boys to predict what 2075 will look like, debates Logan about God &amp; the moon landing, what Prime would taste like on Mars ☄️, if he believes in Bigfoot &amp; the flat earth, 7 words he’s invented, if 3I/ATLAS ... Show More

Is the universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what's beyond them? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.A ... Show More

Since 2008, Big Think has been sharing big ideas from creative and curious minds. Since 2015, the Think Again podcast has been taking us out of our comfort zone, surprising our guests and Jason Gots, your host, with unexpected conversation starters from Big Think’s interview arch ... Show More

<p>Let the children lose it, let the children use it, and let all the children join in for Strong Songs year three!</p><p>Kirk kicks off the new year with a pair of classics by the great David Bowie: 1969's melancholy "Space Oddity" and 1972's triumphant "Starman." What goes up, ... Show More

<p dir="ltr">We take you to Planetary Society headquarters, where Neil deGrasse Tyson, astrophysicist and host of StarTalk, interviews Planetary Society CEO Bill Nye about the organization's 45-year history of empowering the world's citizens to advance space science and explorati ... Show More

Astronomy Cast Ep. 770: The Ethics of Mars Exploration By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 3, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay. It is arguable that humanity now has the technological ability to live on Mars. It would be done at enormous expense ... Show More

The Gaia spacecraft stopped collecting data this January after about 11 years and more than three trillion observations. Senior space and physics editor Lee Billings joins host Rachel Feltman to review Gaia’s Milky Way–mapping mission and the tidal streams, black holes and astero ... Show More

This time Dr Becky Smethurst and Izzie Clarke discover why it’s touch and go when it comes to returning asteroid samples to Earth and hear how we’ve been exchanging spit with Mars since the dawn of the Solar System. The team is joined by Dr Sara Russell, a meteorite researcher at ... Show More

Original broadcast date: Friday, March 19, 2021. Our senses can only take us so far in understanding the world. But with the right tools, we can dig deeper. This hour, TED speakers take us through the looking glass, where we explore new frontiers. Guests include astrophysicist Em ... Show More