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Alexa

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  1. Very interesting site. Thanks oookhc. Nice to meet you.
  2. A pharmaceutical company cannot do anything it wants to. More the company is large, more FDA will survey it's activity. A multi-national has a very powerful Quality Assuarance and Regulatory Affairs dept. So even the Marketing will push for the launch of a new product, if this product is not save for the patients, it will be rejected, no matter the costs for production, packaging and launching.
  3. Hi Martin, I have to wait till we get more links to add. As you know, an up-dated version takes a lot of space. Alexa
  4. I'll be interested in a linguistic forum !
  5. I would like to give the souce, but unfortunately I've saved that stuff in a word document without refference to the link. If I can remember it soon enough, I'll write it in another post. Sorry. The initial info was for my knowlegde only.
  6. A demontration of possible life would be easier on Mars. So I guess you weren't lucky with the choice. Let's we what we have available : Jupiter, Saturn, Uranus and Neptune (the Jovian planets) I'll begin with what we know about their surface and atmosphere. I'm sure you know already all about it, but in my humble opinion, it will be easier to find a solution after a short revision. 1. Jupiter is the fifth planet from the Sun and is the largest one in the solar system. If Jupiter were hollow, more than one thousand Earths could fit inside. It also contains more matter than all of the other planets combined. It has a mass of 1.9 x 1027 kg and is 142,800 kilometers across the equator. The atmosphere is very deep, perhaps comprising the whole planet, and is somewhat like the Sun. It is composed mainly of hydrogen and helium, with small amounts of methane, ammonia, water vapour and other compounds. At great depths within Jupiter, the pressure is so great that the hydrogen atoms are broken up and the electrons are freed so that the resulting atoms consist of bare protons. This produces a state in which the hydrogen becomes metallic. Colourful latitudinal bands, atmospheric clouds and storms illustrate Jupiter's dynamic weather systems. The cloud patterns change within hours or days. The Great Red Spot is a complex storm moving in a counter-clockwise direction. At the outer edge, material appears to rotate in four to six days; near the center, motions are small and nearly random in direction. An array of other smaller storms and eddies can be found through out the banded clouds. Auroral emissions, similar to Earth's northern lights, were observed in the polar regions of Jupiter. The auroral emissions appear to be related to material from Io that spirals along magnetic field lines to fall into Jupiter's atmosphere. Cloud-top lightning bolts, similar to superbolts in Earth's high atmosphere, were also observed. 2. Saturn is the sixth planet from the Sun and is the second largest in the solar system with an equatorial diameter of 119,300 kilometres. Much of what is known about the planet is due to the Voyager explorations in 1980-81. Saturn is visibly flattened at the poles, a result of the very fast rotation of the planet on its axis. Its day is 10 hours, 39 minutes long, and it takes 29.5 Earth years to revolve about the Sun. The atmosphere is primarily composed of hydrogen with small amounts of helium and methane. Saturn is the only planet less dense than water (about 30 percent less). In the unlikely event that a large enough ocean could be found, Saturn would float in it. Saturn's hazy yellow hue is marked by broad atmospheric banding similar to, but fainter than, that found on Jupiter. The wind blows at high speeds on Saturn. Near the equator, it reaches velocities of 500 meters a second. The wind blows mostly in an easterly direction. The strongest winds are found near the equator and velocity falls off uniformly at higher latitudes. At latitudes greater than 35 degrees, winds alternate east and west as latitude increases. 3. Uranus is the seventh planet from the Sun and is the third largest in the solar system. It has an equatorial diameter of 51,800 kilometres and orbits the Sun once every 84.01 Earth years. It has a mean distance from the Sun of 2.87 billion kilometres. The length of a day on Uranus is 17 hours 14 minutes. The atmosphere of Uranus is composed of 83% hydrogen, 15% helium, 2% methane and small amounts of acetylene and other hydrocarbons. Methane in the upper atmosphere absorbs red light, giving Uranus its blue-green color. The atmosphere is arranged into clouds running at constant latitudes, similar to the orientation of the more vivid latitudinal bands seen on Jupiter and Saturn. Winds at mid-latitudes on Uranus blow in the direction of the planet's rotation. These winds blow at velocities of 40 to 160 meters per second. Radio science experiments found winds of about 100 meters per second blowing in the opposite direction at the equator. 4. Neptune is the outermost planet of the gas giants. It has an equatorial diameter of 49,500 kilometres. If Neptune were hollow, it could contain nearly 60 Earths. Neptune orbits the Sun every 165 years. A day on Neptune is 16 hours and 6.7 minutes. The first two thirds of Neptune is composed of a mixture of molten rock, water, liquid ammonia and methane. The outer third is a mixture of heated gases comprised of hydrogen, helium, water and methane. Methane gives Neptune its blue cloud color. Neptune is a dynamic planet with several large, dark spots reminiscent of Jupiter's hurricane-like storms. The largest spot, known as the Great Dark Spot, is about the size of the earth and is similar to the Great Red Spot on Jupiter. Voyager revealed a small, irregularly shaped, eastward-moving cloud scooting around Neptune every 16 hours or so. This scooter as it has been dubbed could be a plume rising above a deeper cloud deck. Long bright clouds, similar to cirrus clouds on Earth, were seen high in Neptune's atmosphere. At low northern latitudes, Voyager captured images of cloud streaks casting their shadows on cloud decks below. The strongest winds on any planet were measured on Neptune. Most of the winds there blow westward, opposite to the rotation of the planet. Near the Great Dark Spot, winds blow up to 2,000 kilometres an hour. I'll take Neptune and try to prove a civilization under water. Not a human one, of course. Anyway, if you have to show some pictures, the blue color would be nice. I hope this can help you.
  7. A terrorist tries to achive a political or religious goal, not a personal benefit, through the power of intimidation and fear. He doesn't care about the country's laws where he operates. Kinda "I am beyond the law"
  8. Whatever the technical choices of the roket, SpaceShipOne has very good chances to get the $10 million from Ansari X Prize. I don't think there will be any surprises for Monday during the second flight. Canadian team, da Vinci tries to hide their disappointment and still want to do their launch this month. Another team disappointed will be the Romanian one with Arca, as the first launch was a succes. And there are the others, I think they were 16 teams in competition, with not a very huge budget. Virgin Galactica already plans space tourism in the next years, so in my opinion our vision regarding the space travel will change very soon.
  9. Alexa

    Jeanne

    I have two friends in Florida and I'm really worried about their lives. I don't wanna know anything about Karl.
  10. Some people are paranoid, violent and ignorant, but to generalize it to entire humanity, it's too much. Ah, the genetic engeneering ! Maybe in about 700 hundreds years, our geneticians will be so advanced to manipulate the genome at the level of a future behaviour. I'm not sure I'll love it.
  11. All right, Martin. I'll check from time to time to see how the threads evolve and if I can you anything to help you, this will be my pleasure ! See you soon, Alexa
  12. Hi Martin, I propose to have them by chapters, like you've mentioned them : quantum physics, classical mechanics, etc. For this one I really need you help and all the others interested on the topic. Astronomy is a hobby for me, so it was easy to gather all the infos. I can try to put them together, but I have no idea of the result. Alexa
  13. Hi Martin, I was looking for a quantum physics thread, when I foung again this one. Do you like to have something like for Astronomy links ? Alexa
  14. Alexa

    Languages

    Nope, you didn't learn anything from your suspension ! Too bad for you. You are just a nasty child who need to be kicked into his ass to learn something ! Or maybe you need a lesson life to learn you need to respect the others to get respect in exchange ! You need to know who you offended ? I felt offended by your stupid posts ! As I already said : GROW UP, CHILD !
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