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The solar system - a brief glance

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In this video we embark on a journey through our solar system From Mercury to Neptune, we'll look at all the planets in our neighbourough. The Solar System is big The Sun's gravity still has an influence at 1.5 light years, where a huge spherical region called the Oort Coud lies. The Solar System can be split into three main regions. The innermost region has our parent star and the terrestrial or "rocky" planets orbiting it. After this we enter the realm of the gas giants-huge balls of gas with their own miniature system of moons. Beyond these lies the outer realms - vast empty wastelands scattered with icy worlds both large and small. Together these regions characterize whar our solar system is today. A tiny blip in the universe that holds a special place for humanity It was formed approximately five billion years ago when a cloud of dust an gas was disturbed and coalesced to form the Sun, the eight planets and a handful of dwarf planets. Our magnificently average star accounts for 99.86% of the solar system mass. And 80% of the remainder is held by the gas giants. The Sun An enormous ball of hydrogen, helium and other gases. It could contain roughly one million earths within it. The light and heat that travels 92.96 million miles to reach Earth is essential for our survival and the survival for every creature on the planet. Mercury - Named after the Roman messenger of the gods The smallest of the inner planets and closest to our Sun. Don't be mistaking this image to be the Moon! Mercury This tiny ball of charred rock is only a twentieth of the mass of the Earth. Mercury's day last two thirds of its year, which is 88 Earth days. The boiled surface of Mercury can reach temperatures of 450 degrees celsius (842 degrees farenheit) and drop to -150 (-238) at night. The only spacecraft to come close to Mercury was Mariner 10 from 1974 to 1975, which was only able to map around 40% of its surface. Venus - Named after the goddess of beauty, this beauty is only skin-deep. Earth's closest planetary neighbor and near-twin in terms of size, Venus is a hellish and hostile volcanic world. Its internal structure is very similar to the Eath's. However, more of its core has frozen solid. Most probes that landed on Venus barely survived for two hours due to the intense heat of 464 (F:867ยบ) degrees Celsius on the surface. Hotter than the scorched surface of Mercury! This 3D image of Maat Mons volcano was constructed using data from the Magellan missions. Second planet from the Sun, this brilliant sight is sometimes known as the Morning or Evening star as is only outshone by the Moon. Mars - Named after the Roman god of war. Renowed as the "Red planet", this dusty world is considerably smaller than Earth. This planet holds geological features unrivaled in the entire solar system. Mars was once just like the Earth, abundant with water and being geologically active. But the planer lost its magnetic field and was pounded by solar winds until most of what was an atmosphere in Mars was stripped away. The Valles marineris Perhaps the most impressive geological feature in the entire solar system. It dwarfs the Grand Canyon being 4000 km long, up to 100 km wide and up to 6 km deep. The canyon would stretch along the entire North American continent. The Olympus Mons is the largest volcano in the solar system. Its 500 km base rises to an altitude of 27 km. Apart from cliffes several kilometers high, the gradient is barely perceptible. Mars is the most likely planet to be colonized with the possibility of manned missions taking place as early as twenty to thirty years time. Patrolling the boundary between the inner and outer solar system are at least 200 million asteroids. This is the result of a planet that would have formed but the far reaching gravity of Jupiter prevents it. Jupiter - Named after the Roman supreme god. The nearest and greatest of the gas giants, Jupiter is a dynamic world that is surrounded by a large system of moons. Jupiter has a solid surface and is mostly composed of almost pure hydrogen. Further down the planet the atmosphere turns to liquid then to liquid then to liquid metal. At the center lies a small core. Jupiter's satellite system consists of 63 moons, four of them planet-sized. Regarded by many as a failed star, Jupiter is mainly comprised of hydrogen and helium. The atmosphere resembles that of our Sun. Jupiter's famous Great Red Spot is raging storm of gigantic proportions. It's wide enough to engulf the Earth and twice as long. It rotates in a counter-clockwise direction once every seven days. Wind speeds in the Jovian atmosphere reach up to 400 kph. In 1994 there was a spectacular inter-planetary collision as large fragments of the comet Shoemaker-Levy 9 crashed into Jupiter's atmosphere. Scattered into a necklace-like chain from a previous close encounter, they slammed into the planet with 600 times the world's nuclear arsenal. The impact left dark spots or "bruises" as it stirred chemical sludge in the outer cloud layers. The fireball plume was 3000 km high. Saturn - Named after the Roman god of agriculture. The jewel of the solar system, Saturn's magnificent rings encircle a fast-moving world that harbours a tantalising Earth-like moon. The sixth planet from the Sun, Saturn is a smaller, paler version of Jupiter. Dominated by hydrogen, storm-racked and a strong magnetic field, this planet provides one of the most beautiful sights in the solar system. Saturn's rings are either formed by remnants of a destroyed moon or leftover nebular material from which Saturn formed. It is mainly composed of water ice. Saturn has 42 known moons. Ranging from planet sized Titan to tiny rocks such as Telesto. Cloaked in a dense orange atmosphere, Titan is a hidden world of rivers, lakes and volcanoes. It's the most complex satellite in the solar system. Derived from the name of the greek god Ouranus, Uranus was initially called Georgium sidum (George's star). A most unusual planet, Uranus has placid, featureless cloud tops and contains mainly hydrogen, helium and methane. It has a bizarre axis of rotation tilted at 98 degrees and its even stranger magnetic field does not pass through its core. The last of the gas giants, Neptune is very much like Uranus. It's a planet of raging 4000 kph winds. It's the first planet discovered by a mathematician. Our home, the planet Earth. A blue, green and white planet with active geology and a huge panoply of life. It is, so far, the only planet proven to sustain life. The Moon (Luna) is the largest satellite in the inner solar system and is the only other world visited by humans. It's our planetary partner and has a major influence on our planet throughout its history and from day-to-day. "I don't think the human race will survive the next thousand years unless we spread into space. There are too many accidents that can befall life on a single planet. but I'm an optimist. We will reach out to the stars" - Stephan Hawking

Video Details

Duration: 9 minutes and 42 seconds
Country: United States
Language: English
Views: 202
Posted by: fparente on Sep 14, 2011

Describes the solar systema for educational purposes

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