How many moons does the Earth have?

Daniel and Kelly get answers to listener questions about why we age from Dr. Venki Ramakrishnan, author of "Why We Die: The New Science of Aging and the Quest for Immortality".See omnystudio.com/listener for privacy information. 

Daniel and Kelly talk about how gravity, magnetism and relativity work together to create one of the most brilliant spectacles in the Universe.See omnystudio.com/listener for privacy information. 

Daniel and Kelly talk to Phil Metzger about the engineering challenges of building self-replication space probes.See omnystudio.com/listener for privacy information. 

Astronauts left over a hundred items on the moon's surface. But are today's telescopes powerful enough to see what's there? Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

If you guessed 'gravity' you're right -- but a few specific factors make Jupiter so much moonier than planets like Earth. Learn more in this episode of BrainStuff.  Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy inf ... Show More

Astronauts have left over a hundred items on the moon's surface. Learn what telescopes are powerful enough to spot them in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy informati ... Show More

In this episode of BrainStuff, Marshall explains the physics behind satellites and orbits. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

NASA's epic Cassini mission taught us a lot about Saturn and its moons -- and about ourselves, too. Learn more about it in this classic episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy informati ... Show More

Once more, it's time for a weekly dose of Stuff to Blow Your Mind and Weirdhouse Cinema listener mail... Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

Aim as high as you can. Aim for the moon just in case you miss you'll still be amongst the stars. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

Aim as high as you can. Aim for the moon just in case you miss you'll still be amongst the stars. Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information. 

Once more, it's time for a weekly dose of Stuff to Blow Your Mind and Weirdhouse Cinema listener mail...See omnystudio.com/listener for privacy information. 

In this episode of Stuff to Blow Your Mind, Robert and Joe continue their multi-year mission to discuss the various moons of our solar system – this time with the literary-themed moons of the ice giant Uranus. (Part 2 of 3)See omnystudio.com/listener for privacy information.