Space Place Musings :: Podcasts
Why is Earth's core so hot?
![Fire leaping out of a hole in the ground.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/hot_earth-100x100.en.jpg)
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How did the Milky Way get its name?
![Little Lucy gazes at the Milky Way in the sky.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/cassie-100x100.en.jpg)
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Is time travel possible?
![Cartoon clock carrying a briefcase in running on feet.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/time_travel_100x100.en.jpg)
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Where is the center of the universe?
![Cartoon red ballon covered with black spots evenly spaced.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/balloon_100.en.jpg)
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Why are stars different sizes?
![Cartoon sun.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/star_headache_100.en.jpg)
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What if the Sun became a black hole?
![Artist idea of a black hole.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/black_hole_art_100.en.jpg)
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Why does Earth rotate?
![Cartoon of Earth being hit by asteroid.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/earth_moon.en.gif)
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What powers a comet?
![Comet.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/comet_power_100.en.jpg)
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Could you fly through a gas giant planet?
![Saturn.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/saturn.en.jpg)
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Why do the planets orbit the Sun?
![Cartoon showing the orbital paths of the planets, with the Sun in the center.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/planetary_orbits.en.jpg)
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What causes the beautiful Northern Lights?
![Cartoon showing the orbital paths of the planets, with the Sun in the center.](https://webarchive.library.unt.edu/web/20130218103958im_/http://spaceplace.nasa.gov/review/podcasts/images/aurora_b_anchorage3.en.jpg)
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