Satellites are like robots in the sky: they monitor the weather, make GPS possible, and take stunning pictures of outer space! But how exactly do they work? When a satellite named Meep Moop gets delivered to Brains On HQ by mistake, Molly and co-hosts Tessa and Fallyn learn all about satellite solar panels, thrusters, and radio waves! Then, they chat with Dr. Moriba Jah about satellite space junk and the importance of keeping space pristine. Plus, a stumper of a mystery sound! Featured expert:Dr. Moriba Jah, space environmentalist and professor of Aerospace Engineering and Engineering Mechanics at The University of Texas at Austin. Find him on Instagram at @moribajah and Facebook @Moriba Kemessia Jah Special thanks to:Dr. David “Goldy” Goldstein, principal engineer, SpaceX; Colonel., U.S. Air Force, Ret. Resources:If you want to hear more about GPS, check out the Brains On episode How does GPS know where you are? And if you’re curious to learn more about space junk, check out Satellite uses giant net to practice capturing space junk and the video Tracking space junk, both written and hosted by Loren Grush and produced by The Verge. Do you have your Smarty Pass yet?? Get yours today for just $4/month (or $36/year) and get bonus episodes every month, and ad-free versions of every episode of Brains On, Smash Boom Best, Moment of Um, and Forever Ago. Visit www.smartypass.org to get your Smarty Pass today! ____________ This episode was sponsored by: Sitka Seafood Market - Use promo code Molly35 to receive $35 off your first order.  Indeed - Use promo code brainson to receive a $75 sponsored job credit See omnystudio.com/listener for privacy information.