How big is the solar system? I Sci Guide with Martin Archer I Head Squeeze

Channel:
United Kingdom BBC Earth Science
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Published on ● Video Link: https://www.youtube.com/watch?v=UB0vsiLMM40


Category:
Guide
Duration: 5:29
30,324 views
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Defining the size of the solar system isn't as easy as it sounds. We have the sun and all our planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Poor Pluto was kicked out of the planet club in 2006.

How can we define the edge of the solar system? Do we measure it by looking at the power and range of the sun? Do we measure by looking at the power and range of gravitational fields? Or do we measure it by looking at the light emitted by the sun?
Resident physicist Martin Archer talks us through all the possibilities.

How far away might extra-terrestrial life be? http://www.youtube.com/watch?v=sue_esAhcUI&list=PLMrtJn-MOYmdbPmMYmArKa-LPIQmeicJB&index=6

Ask an Astronaut
http://www.youtube.com/watch?index=1&list=PLMrtJn-MOYmeEnMn6jcdaUeK24J4tbfR3&v=fhjpfIhEfXE

Martin Archer's Favourite Head Squeeze Videos
http://www.youtube.com/watch?index=1&list=PLMrtJn-MOYmfUnbmytme6cYfN8b_Zpmj9&v=PYJ7DbdxlMA

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How big is the solar system?
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Gravity
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How many planets in our solar system?
What happened to Pluto?
Sci Guide
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