World IPv6 Day has Facebook, Google & Yahoo Support

Probably Everyone of us Might be Aware Of the fact that Internet s running out of IP addresses as more and more people and devices hook up to the Web Every day.

Every Host and Router on the Internet has Got an Ip address,Which Encodes its Network number .The combination is Unique ,No two macines On internet Have the Same ip.All these ip Are 32 bits .Network numbers are managed By a non profit corporation called ICANN.

some Millions Of networks are now Being connected to the internet and This number is Increasing Every second .Internet is Getting Its huge shape these days.slowly Internet is Running Out of Address in simple Terms It Stops Expanding .There are only a few billion public IPv4 addresses. Many of those addresses have already been allocated

Atpresent We are Following ipv4 .It is the mostly used Internetworking Protocol which is standardised in 1996. But experts warn that this space could be exhausted in a matter of months.
There is been a Slow Transition between ipv4 and ipv6 is going on,has Already taken years and is by no Means close to being finished.we Also have an intermediate ipv5 which was an experimental Real time stream protocol That was Never been used.
With the use ipv6 there is huge hope Of Having An enormous internet space.
The next generation of Internet addresses, IPv6, has 4billion times more space than the current network.

What Is Ipv6 ??

Internet Protocol Version 6 (IPv6) is a version of the Internet Protocol that is designed to succeed Internet Protocol version 4 (IPv4).In ipv6 ,The ip Was Extenisvely modified To accomodate The huge Growth Of internet.The Format  and the Length of ip were changed.The next Generation ip has following Advantages over Traditional Ipv4
*Largest Address Space .ipv6 is 128 bits long where as ipv4 is 32 bits Address .which is A four fold increase in address space
The new address space supports 2128 (about 3.4×1038) addresses. This expansion provides considerable flexibility in allocating addresses and routing traffic. It also eliminates the primary need for network address translation (NAT), which gained widespread deployment as an effort to alleviate IPv4 address exhaustion.
*Multicast : these Additonal Functionality allows the Transmission of data packet to multiple Destinations with a single operation
*Allowance for Extension :it Is Designed To Allow the extension of protocol if req.by new Technologies or apps.
*support for More security

The Web gaints Facebook, Google and Yahoo are switching their websites to new Internet addresses in a 24-hour test to raise awareness of the critical shortage of capacity which is based on 64-bit addresses, and which will enable trillions more people and automated devices to successfully hook up to the Net using new IP addresses.
Its A big Step in the internet World .The three online giants, which together attract more than 1 billion visits a day, will transfer their sites to the next generation of internet addresses on June 8th, as experts warn that online capacity is running dangerously low.

According to The Internet Society, “The goal of the Test Drive Day is to motivate organizations across the industry - Internet service providers, hardware makers, operating system vendors and web companies - to prepare their services for IPv6 to ensure a successful transition as IPv4 addresses run out.”

On june 8th of this year Google, Facebook, Yahoo and Akamai will be switch on full IPv6 support on their main websites. It's being named as "World IPv6 Day," and it's the first full-scale test of the system, designed to see if the Net's infrastructure can successfully support it .On the Worl ipv6 day All our Internet Service Providers Manage The Configurations for the ipv6.
 The World IPv6 Day is being co-ordinated by the Internet Society, a non-profit group which educates people and companies about net issues. It has provided a webpage through which people can test their Ipv6 readiness.checkout the test.

Astronomers release the largest color image of the sky ever made

Astronomers have released the largest-ever colour image of the whole sky, stitched from seven million images, each made of 125 million pixels.

The Sloan Digital Sky Survey's latest effort tops its own record, published publicly for professional astronomers and "citizen scientists" alike.

Data from Sloan have helped to identify hundreds of millions of cosmic objects.

The release was announced at the 217th annual meeting of the American Astronomical Society in Seattle, US.

Researchers have released an animation on YouTube demonstrating how the incredibly high-resolution image is represented on the celestial sphere.

Michael Blanton, a New York University physicist who presented the work on behalf of the Sloan team, told the conference that it was difficult to overstate the breadth of data Sloan provides.

"There's something like 3,500 papers that have been written on the basis of this data set," he said.

"A few dozen of them are being presented right now, this week at this meeting. They cover topics from the very smallest stars to the most massive black holes in the universe."

Nearly half a billion stars and galaxies have already been discovered and described thanks to Sloan images, and the new release is sure to significantly increase that number.

Sloan data are also behind the Google Sky service, which allows users to scan the heavens in the same way as scanning their local streets, and the Galaxy Zoo project, which has allowed astronomy enthusiasts to characterise galaxies from their own computers.

The workhorse behind the data set, a camera comprising 125 million pixels that long held the record for highest-resolution camera in the world, has been retired.

Studies will now focus on spectrometry - unpicking new data on the basis of the colours of light that the upgraded equipment.

They include:

the Baryon Oscillation Spectroscopic Survey, which will study the periodic ripples that were left behind in the early days of the Universe
the Sloan Extension for Galactic Understanding and Exploration that measures the evidence of small galaxies on the edge of our Milky Way being swallowed up
the APO Galactic Evolution Experiment, which will study red giant stars within our Galaxy to better understand the Milky Way's overall chemical recipe
the Multi-object APO Radial Velocity Exoplanet Large-area Survey, which will spot giant planets outside our solar system in a bid to better model how planets form
But even the data that are already available, thanks to Tuesday's release, will keep astronomers of both the professional and the amateur variety busy.

"You can compare it to the National Geographic Palomar Survey of the late 1950s," Dr Blanton said.

"This is something that 50 years later is still a really important reference to astronomers; we use it ourselves to better understand our own images. SDSS is the digital version of that."


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