Earth is a living planet. Volcanic eruptions mean that it is geological alive. Astronomers and geologists wondered for a long time if other planets also are alive. When a series of space probes went to Mars and Venus in the 60's and 70's, the researchers were eager to look at the photos of those planets. They saw gigantic volcanoes and canyons, but these were just remnants of geological activities billions of years ago. Earth seemed to be the only living world in universe. But when the space probe Voyager in 1979 passed the moons of Jupiter something unexpected was seen. The moon Io is covered with volcanoes that are still alive. The explanation for this seems to be the huge gravitational force from Jupiter squeezing Io, thus heating the interior of this moon to incredible temperatures. Jupiter's gravitational force also squeezes the moon Europe, so its ice-cap cracks continuously, causing gigantic geysers of water to squirt 5-10 km upwards. A similar phenomenon was found on Neptune's... Written by Maths Jesperson {maths.jesperson1@comhem.se}
All Episodes - S01
EPS01
The planets are nine worlds that seem to have little in common, except that they circle around a single sun and are bound together by its gravity. Shortly after World War ...
EPS02
Earth is a living planet. Volcanic eruptions mean that it is geological alive. Astronomers and geologists wondered for a long time if other planets also are alive. When a ...
EPS03
To send space probes to the four giant planets in the outer solar system seemed in the mid-60's impossible. Rocket power could carry a spacecraft no further than Jupiter. ...
EPS04
In 1959 the Soviet probe Lunik 2 becomes the first spacecraft ever to hit the Moon. Within a month it is followed by Lunik 3, which takes the first pictures of the dark s ...
EPS05
A spectroscope splits the sun light into different colors, thereby making it possible to analyze which elements the Sun is made of. When the spectroscope is turned to dif ...
EPS06
The Planets looks at planetary atmospheres. It looks at the life giving atmosphere of Earth, the crushing greenhouse of Venus, the thin gaseous layer of Mars, and the mae ...
EPS07
The Planets examines the prospects of life on other worlds in our solar system. It looks at Venus, Mars, and the water bearing moons of the outer planets. ...
EPS08
The Planets looks at the ultimate fate of our solar system and examines the possibility of extrasolar planets. ...
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