Episode guide
Series 1
Secrets Of The Solar System
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Secrets Of The Solar System
An examination of how the regular discovery of distant planets is forcing scientists to put forward new theories to explain the creation of the solar system.
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Series 1
Secrets Of The Solar System
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Venus: A Living Hell?
For centuries, humans imagined Venus to be a tropical paradise, but in reality its clouds are full of acid and the temperature is the same even at the poles.
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Jupiter: The Mighty Planet
Jupiter is big, very dangerous and has moons as big as planets, but the more we learn we must conclude this giant is less of a planet and more of a failed star.
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The Realm of the Sun
A team of scientists launch a probe to touch the sun and make a surprise discovery on the tiny planet Mercury.
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A Grand Tour
Embark on a grand tour of the solar system, unravelling secrets that the planets have harboured for millions of years and discover that Earth almost never existed at all.
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The Great Red Hope
Mars is one of the best-explored places in the solar system and yet we still don't know the answer to the big question: is there or was there life on Mars?
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The Asteroid Belt
Discover the eerie wasteland of failed planets and strange rocks that lies beyond Mars and before Jupiter.
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The Celestial Beauty
In 1610, Galileo Galilei became the first person to observe Saturn's rings and this celestial mystery has been puzzling mankind ever since.
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The Outer Planets
The first mission to Pluto. Speaking to the people involved, the steps on this incredible journey are retraced, while also looking at the events that led them there.
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