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The Internet map The map of the Internet Like any other map, The Internet map is a scheme displaying objects’ relative position; but unlike real maps (e.g. the map of the Earth) or virtual maps (e.g. the map of Mordor), the objects shown on it are not aligned on a surface. Mathematically speaking, The Internet map is a bi-dimensional presentation of links between websites on the Internet. Every site is a circle on the map, and its size is determined by website traffic, the larger the amount of traffic, the bigger the circle. Charges and springs To draw an analogy from classical physics, one may say that websites are electrically charged bodies, while links between them are springs. Also, an analogy can be drawn from quantum physics. Anyway, the real algorithm of plotting The Internet map is quite far from the analogies given above. Semantic web The map of the Internet is a photo shot of the global network as of end of 2011 (however, baloons show actual statistics from Alexa). The Internet Phenomenon

October 24, 1999 - The Magnetic Carpet Of The Sun Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. October 24, 1999 The Magnetic Carpet Of The Sun Credit: SOHO Consortium, ESA, NASA Explanation: The Sun has a magnetic carpet. Its visible surface appears to be carpeted with tens of thousands of magnetic north and south poles joined by looping field lines which extend outward into the Solar Corona. Tomorrow's picture: Neptune Past Red Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)NASA Technical Rep.: Jay Norris.

ChronosXP - Free Planetary Hours Software for Windows - Astrology Freeware Hubble's Hidden Treasures 2012 Since 1990, Hubble has made more than a million observations. We feature many of these on spacetelescope.org, and the most stunning are in our Top 100 gallery and iPad app. But there are thousands of pictures in Hubble’s science archive that have only been seen by a few scientists. We call these images Hubble’s hidden treasures — stunning images of astronomical phenomena that have never been seen and enjoyed by the public. Every week, we search the archive for hidden treasures, process the scientific data into attractive images and publish them as the Hubble Picture of the Week. This is where you come in. Searching Hubble’s archive for hidden treasures is a lot of fun, and it’s pretty straightforward, even if you don’t have advanced knowledge. We’ve prepared some tutorials to get you started with searching the archive, and to say thank you for helping us, between now and 31 May 2012, we’re running two competitions with great prizes: Read more:

The Kneeslider — Doers and Builders Congregate Here October 8, 1998 - Far Side of the Moon Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. October 8, 1998 Explanation: Locked in synchronous rotation, the Moon always presents its well-known near side to Earth. Skymaps.com - Publication Quality Sky Maps & Star Charts Q code The Q code is a standardized collection of three-letter message encodings, also known as a brevity code, all of which start with the letter "Q", initially developed for commercial radiotelegraph communication, and later adopted by other radio services, especially amateur radio. Although Q codes were created when radio used Morse code exclusively, they continued to be employed after the introduction of voice transmissions. To avoid confusion, transmitter call signs are restricted; while an embedded three-letter Q sequence may occur (for instance when requested by an amateur radio station dedicated to low-power operation), no country is ever issued an ITU prefix starting with "Q". The codes in the range QAA–QNZ are reserved for aeronautical use; QOA–QQZ for maritime use and QRA–QUZ for all services. Early developments[edit] The following table reviews a sample of the all-services Q codes adopted by the 1912 Convention: Later usage[edit] Breakdown by service[edit] Amateur radio[edit]

September 23, 1999 - Equinox and Eruptive Prominence Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. September 23, 1999 Explanation: Today, the Sun crosses the celestial equator and seasons change from Summer to Fall in the north and Winter to Spring in the southern hemisphere. Defined by the Sun's position in sky the event is known as an equinox - the length of daylight is equal to the length of night. Just last week the active Sun produced the dramatic eruptive prominence seen in this extreme ultraviolet picture from the space-based SOHO observatory.