Ranked #1
Boyle's Law
Boyle's Law
Transcript: The properties of gases were first explored in the mid-seventeenth century by Robert Boyle. Boyle was the y... Read more
21 Jul 2011
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Ranked #2
Great Red Spot
Great Red Spot
Transcript: The most famous and dramatic feature on any of the giant planets is Jupiter’s great red spot. This huge ova... Read more
21 Jul 2011
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Ranked #3
A Variety of Moons
A Variety of Moons
Transcript: We tend to think of the solar system as containing only nine planets, or eight planets plus Pluto, but the s... Read more
21 Jul 2011
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Ranked #4
Planetary Ices
Planetary Ices
Transcript: The gas giant planets are far from the Sun and very cold. Hydrogen and helium of which they are mostly comp... Read more
21 Jul 2011
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Ranked #5
Giant Planets
Giant Planets
Transcript: The four terrestrial planets are huddled relatively close to the Sun. Beyond the asteroid belt are four gia... Read more
21 Jul 2011
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Ranked #6
Oxygen Atmosphere
Oxygen Atmosphere
Transcript: Free oxygen in a planetary atmosphere means that something unusual is going on. Oxygen is one of the most r... Read more
21 Jul 2011
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Ranked #7
Evidence for Life on Mars
Evidence for Life on Mars
Transcript: How good is the evidence for ancient life on Mars based on the Allen Hills Meteorite? The evidence comes in... Read more
21 Jul 2011
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1min
Ranked #8
Life on Mars
Life on Mars
Transcript: Centuries of speculation came to a head in 1996 when a team of scientists announced very publicly that they ... Read more
21 Jul 2011
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Ranked #9
Volcanoes on Mars
Volcanoes on Mars
Transcript: Mars is a relatively small planet, and since the mass of a planet drives the likelihood of geological activi... Read more
21 Jul 2011
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Ranked #10
Saturn's Rings
Saturn's Rings
Transcript: Saturn's rings were first seen by Galileo in 1610. However, with the poor optics of his early telescope Gal... Read more
21 Jul 2011
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Ranked #11
Interior of Saturn
Interior of Saturn
Transcript: The interior of Saturn is almost certainly very similar to the interior of Jupiter, grading down from a pure... Read more
21 Jul 2011
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Ranked #12
Saturn
Saturn
Transcript: Saturn, sixth planet out from the Sun, is second only to Jupiter in size and mass. Its atmospheric composit... Read more
21 Jul 2011
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Ranked #13
Gas Giant Ring Systems
Gas Giant Ring Systems
Transcript: Saturn is famous for its beautiful ring system, but all four of the gas giant planets have thin and delicate... Read more
21 Jul 2011
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Ranked #14
Life on Jupiter
Life on Jupiter
Transcript: It seems unlikely that life could exist on or in any of the giant planets, yet scientists have speculated ov... Read more
21 Jul 2011
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Ranked #15
Atmosphere of Mars
Atmosphere of Mars
Transcript: Mars is cold and dry, a frozen desert. The temperature ranges from about -120 degrees Fahrenheit, or 190 Ke... Read more
21 Jul 2011
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1min