Brief Answers to Cosmic QuestionsStructure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe?The World FactbookThe Office of Public Affairs (OPA) is the single point of contact for all inquiries about the Central Intelligence Agency (CIA). We read every letter, fax, or e-mail we receive, and we will convey your comments to CIA officials outside OPA as appropriate. However, with limited staff and resources, we simply cannot respond to all who write to us. Contact Information Submit questions or comments online By postal mail: Central Intelligence Agency Office of Public Affairs Washington, D.C. 20505
How Graphics Cards Work"The images you see on your monitor are made of tiny dots called pixels. At most common resolution settings, a screen displays over a million pixels, and the computer has to decide what to do with every one in order to create an image. To do this, it needs a translator -- something to take binary data from the CPU and turn it into a picture you can see. Unless a computer has graphics capability built into the motherboard, that translation takes place on the graphics card. A graphics card's job is complex, but its principles and components are easy to understand. In this article, we will look at the basic parts of a video card and what they do.
40 websites that will make you cleverer right nowThe indexed web contains an incredible 14 billion pages. But only a tiny fraction help you improve your brain power. Here are 40 of the best. whizzpast.com – Learn about our awe inspiring past all in one wonderful place. khanacademy.org – Watch thousands of micro-lectures on topics ranging from history and medicine to chemistry and computer science.
Surya Siddhantha Planetary ModelThis animation illustrates the geocetric model of the Surya Siddhantha. The Surya Siddhantha models both the diurnal as well as orbital motions of the celestial bodies around the Earth. Diurnal motion is modeled by making all the celestial bodies including the fixed stars of the zodiac (i.e. Nakshatra Mandala) orbit the Earth at a rapid rate. Sidereal orbital motion of the celestial bodies is modeled by the relative "fall-back" of the celestial bodies with respect to the fixed stars (since the fixed stars have the highest orbital speed).
40 technologies to watch in 2011If the popular misreading of Mayan mythology is correct, we have fewer than two more years left on this Earth. That leaves precious little time for the tech industry to develop and perfect of all the cool technologies that sci-fi authors have dreamed up over the years. Still, while a December 2012 apocalypse may spell doom for the commercial viability of hovercars, it doesn't mean that the next couple of years in tech will be dull — quite the contrary. 2011 is already shaping up to be a banner year for tech and web innovation. Below is a list of over 40 websites, apps, companies, gadgets and technologies that the editors of Mashable think that you should keep an eye on over the coming year. None of them let you zoom through the air over traffic, but they're definitely all worth a look. Be sure to click through to each article to see our full write ups on individual entries, and let us know in the comments what you're looking out for in 2011.
The Big List of Educational Grants and ResourcesGrants NEW! Fund for Teachers Grants for Self-Designed Professional DevelopmentTop 10 Shocking DocumentariesMovies and TV As a visual medium, documentaries frequently succeed in portraying the unimaginable far better then any book alone could do. Beaming everything from the consequences of child abuse to the horrors of nuclear warfare into the homes of millions, the following infamous documentaries shock the viewer and challenge perceptions. Please note: Almost all the videos featured contain graphic and disturbing content, relevant to the topic at hand.
If the Moon Were Only 1 Pixel - A tediously accurate map of the solar systemMercury Venus Earth You Are Here Moon Mars