Are atomic models just tiny Solar Systems? Is it just Solar Systems all the way down? Neil deGrasse Tyson gets to the heart of those questions as he offers an informed rebuttal.

Why don't some of our smaller planets have moons? Neil delves deeply into the laws that govern planetary physics. Learn about the struggle for Gravitational Influence. How many moons does Jupiter have? The answer may surprise you.

Of course, Neil doesn't miss an opportunity to remind everyone why Pluto isn't a planet either. He explains eloquently why Pluto doesn't make it into the club, while also tackling other planetary questions; Why are planets round? Why do we have seasons? Why does the tide come in and out? All this, and more, will be answered by your personal astrophysicist.

From an episode of 'Cosmic Queries — Everyday Astrophysics':    • StarTalk Podcast: Everyday Astrophysi...  

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Timestamps:
0:00 - Solar Systems All the Way Down?
0:52 - Why Don't Smaller Planets Have Moons?
1:38 - Why Pluto Isn't a Planet
3:13 - The Moon is Spiraling Away from Earth
3:41 - Why We Have Tides
4:33 - Falling into Jupiter
5:28 - Why We Have Seasons
6:45 - Life on Exoplanets
7:29 - The Big Bang Theory