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How Far is it to Mars?

How Far is it to Mars?
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100,000 Stars Les bouteilles en plastique sont-elles dangereuses ? Les denrées alimentaires sont toujours contenues dans des récipients. Dans tous les cas, et particulièrement lorsqu'il s'agit de liquides, on peut se poser la question de l'interaction chimique entre le liquide et le récipient. Pour nous consommateurs, les questions peuvent se résumer ainsi : quelle est la nature du matériau qui est en contact avec le liquide ? Des molécules du récipient peuvent-elles migrer vers le liquide, par réaction ou par dissolution ? En ce qui concerne les bouteilles en plastique, et plus généralement les récipients alimentaires en plastique, et dans la mesure où ces récipients sont issus de la chimie du pétrole, des produits toxiques peuvent-ils migrer de la bouteille dans le liquide. Le bisphénol A (BPA) est un composé chimique que l'on peut trouver dans les récipients en plastique. Ce que disent les études scientifiques Les autres substances potentiellement dangereuses Le BPA ne serait pas l'unique composant à poser des problèmes pour la santé. Notre position

Binary star system found right under our noses In a day when we have examined astronomical objects shining forth from a time shortly after the Big Bang, one would think astronomers have a pretty good handle on what is in the immediate vicinity of the Solar System. That's why the recent report of a binary star lying only 6.5 light-years away came as rather a surprise to the astronomical community. The pair, called WISE J1049-5319 A and B, are brown dwarf stars and only two star systems – the triple star Alpha Centauri, and Barnard's Star – lie closer to our Sun. In December of 2009, NASA's Wide-field Infrared Survey Explorer (WISE) was launched into a polar orbit at an altitude of 525 km (326 miles) back in 2009. Brown dwarf stars are stars that have too little mass to fuse hydrogen (although deuterium is likely to fuse for a brief period). Prof. WISE J1049-5319 was one of the objects selected by Luhman's search of the WISE database. Sources: Pennsylvania State University

A beginner’s guide to building botnets—with little assembly required Have a plan to steal millions from banks and their customers but can't write a line of code? Want to get rich quick off advertising click fraud but "quick" doesn't include time to learn how to do it? No problem. Building successful malware is an expensive business. In the process, these big botnet platforms have created a whole ecosystem of software and services in an underground market catering to criminals without the skills to build it themselves. The customers of these services often plan more for the short term than the long game played by the big cyber-crime rings. So how easy is it to get into the botnet business? To assemble your list for some of the simplest get-rich-quick schemes, all you need is about $600, a little spare time, and no compunctions about breaking laws to make a profit. It looks like you’re trying to build a botnet… Of course, that price is for a particular type of botnet. With my rough estimate in place, it was time to actually start some research of my own.

New Study Challenges Planck Results cosmic microwave backgroundA new view of the cosmic microwave background, as seen over the whole sky with the Planck satellite. Although analyses of this image indicate complete agreement with the simple model of a big bang inflation, a new paper suggests the agreement is so perfect that it is very unlikely the inflation model is actually the correct one. Credit: ESA/Planck A new study from researchers at the Harvard-Smithsonian Center for Astrophysics challenges the inflation model, arguing that the new Planck results are actually too good. The universe was created about fourteen billion years ago in a blaze of light known as the big bang. The CMBR was discovered by Penzias and Wilson in 1964. According to models of inflation proposed in the 1980’s, based on concepts in elementary particle physics, the early universe underwent a dramatic and exponential growth spurt, swelling in size a trillion trillion trillion times. Or maybe not. Source: Harvard-Smithsonian Center for Astrophysics

Magnifying the Universe Embed this infographic on your site! <iframe width="500" height="323" scrolling="no" src=" frameborder="0" allowfullscreen></iframe><br />Copyright 2012. <a href=" the Universe</a> by <a href=" Sleuth</a>. The above is an interactive infographic. Introduction: This interactive infographic from Number Sleuth accurately illustrates the scale of over 100 items within the observable universe ranging from galaxies to insects, nebulae and stars to molecules and atoms. While other sites have tried to magnify the universe, no one else has done so with real photographs and 3D renderings. We hope you have a blast magnifying the universe, know that each time you zoom in a depth, you're magnifying the universe 10x ... and every time you zoom out, the bigger objects are 1/10th of their prior size. How To Use: Credits:

معنى كلمة تضمر في قاموس المعاني. قاموس عربي عربي مصطلحات صفحة 1 عربي البحث المتقدم كلمات قريبة معنى تضمر في معجم المعاني الجامع - معجم عربي عربي كلمات ذات صلة معنى تضمر في قاموس المعاني. تَضَمَّرَ : تَضَمَّرَ : مطاوع ضَمَّرَهُ . آخر الكلمات التي تم البحث عنها المترجم الفوري هل لديك قائمة مصطلحات لتشاركنا بها؟ اذا توفر لديك قائمة معان بأية لغة وتود اضافتها الى الموقع الرجاء ارسالها على البريد الالكتروني التالي أرسل سؤالا أعلن معنا حمل شريط أدوات المعاني معاجم المعاني الثنائية فهارس المعاني BOLIDES - Visualizing meteorites 20 Awesome Resources for Twitter Bootstrap Lovers Generators Bootstrap Custom Build Before diving into great third party Bootstrap resources, it’s worth pointing out a great little tool right from Twitter that allows you to completely customize an impressive range of Boostrap features so that you can create a custom build that’s perfect for your project. If you haven’t checked out Bootstrap in a while, you should give this a look because it’s new with Twitter Bootstrap 2.0. Not only can you use it to take an overweight download and transform it into something lean, you can also save yourself a lot of CSS work by customizing colors, fonts etc. before you even initiate the download. As with Twitter’s own tool above, this tool allows you to use a simple interface to customize various aspects of Bootstrap. The app itself is also more visual than Twitter’s generator and allows you to see what your styles will look like before you hit that download button. Beautiful Buttons for Twitter Bootstrappers Theming BootstrapStyler

Mapping the Chemistry Needed for Life at Europa This color composite view combines violet, green, and infrared images of Jupiter's intriguing moon, Europa, for a view of the moon in natural color (left) and in enhanced color designed to bring out subtle color differences in the surface (right). The bright white and bluish part of Europa's surface is composed mostly of water ice, with very few non-ice materials. In contrast, the brownish mottled regions on the right side of the image may be covered by hydrated salts and an unknown red component. The yellowish mottled terrain on the left side of the image is caused by some other unknown component. A new paper led by a NASA researcher shows that hydrogen peroxide is abundant across much of the surface of Jupiter's moon Europa. The paper, co-authored by Mike Brown of the California Institute of Technology in Pasadena, analyzed data in the near-infrared range of light from Europa, using the Keck II Telescope on Mauna Kea, Hawaii, over four nights in September 2011.

Sizes of the Universe Poster Share this infographic on your site! <a href=" src=" alt="Sizes of the Universe" width="500" border="0" /></a><br />Source: <a href=" Sleuth</a> Embed this infographic on your site! Have you ever wondered how big the universe is? Interact: Magnifying the Universe Interactive Infographic

الموسوعة الإلكترونية الناطقة - نظام اندرويد - دار آل ياسر الموسوعة الإلكترونية الناطقة - نظام اندرويد وهي عبارة عن موسوعة ن الناطقة التي تعمل بشكل برمجي على نظام الأندرويد بحيث يتم تنصيب البرنامج إما من الـ DVD أو من كرت ذاكرة "Micro SD" على الموبايل أو التابلت أو أي جهاز يعمل بنظام الأندرويد التعريف بالموسوعة: هذه الموسوعة القرآنية تقوم على أساس فكرة المزج بين العلوم القرآنية والتقنيات الالكترونية، حيث يمكنك أخي القارئ الاستفادة من هذه المعلومات من خلال سماعها من الجهاز الخاص بك، مما يوفر عليك الوقت والجهد. ويمكنك اختبار حسن فهمك للمعلومات من خلال ميزة طرح الأسئلة التطبيقية وتصويبها بلمس الإجابة كما يمكنك اختبار حسن أدائك من خلال ميزة التسجيل والاستماع التي يوفرها لك البرنامج. كيفية استخدام البرنامج هذا البرنامج يتيح لك الاستفادة من المعلومات المخزنة فيه بمجرد لمس الأيقونة التي تختارها. وقد قمنا بتوفير هذه الأيقونات من خلال القائمة المنسدلة والهامش الداخلي . القائمة المنسدلة وإليك تفصيلاً عن محتويات البرنامج: أولا : تبويب التلاوات منزلقة فهرس السور حيث يمكنك من اختيار السورة التي تريدها عن طريق زلق القائمة ثانيا : تبويب التسجيل ثالثا : تبويب الاختبارات

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