M.I.T. Meets Tumblr: The Anatomy of a Forgotten Social Network

While network scientists have been poring over data from Twitter and Facebook, they’ve forgotten about Tumblr. Now they’ve begun to ask how this network differs from the rest.

Tumblr
The study of social networks has gripped computer scientists in recent years. In particular, researchers have focused on a few of the biggest networks that have made their data available, such as some mobile phone networks, Wikipedia and Twitter.

“One interesting question is whether Tumblr more closely resembles a blogosphere network than a microblogging network like that of Twitter.”

But in the rush, one network has been more or less ignored by researchers: Tumblr, a microblogging platform similar to Twitter. So an interesting question is how the network associated with Tumblr is different from the Twitter network.

Today we get an answer thanks to the work of Yi Chang and pals at Yahoo Labs in Sunnyvale. These guys point out that relatively little is known about Tumblr compared to other networks like Twitter and set out to change this.

The basic statistics are straightforward. Tumblr is a microblogging service with about 160 million users who together have published over 70 billion posts.

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Virtual Tour of Chinese Lunar Landing Site

This image shows terrain matched in an image from the Chang'e 3 lander and an image from NASA's Lunar Reconnaissance Orbiter. See a larger version. Credit: CNSA/NASA/Ken Kremer/Marco Di Lorenzo/Mark Robinson

This image shows terrain matched in an image from the Chang’e 3 lander and an image from NASA’s Lunar Reconnaissance Orbiter. See a larger version.
Credit: CNSA/NASA/Ken Kremer/Marco Di Lorenzo/Mark Robinson

Video and photos of China’s lunar rover mission

China’s robotic moon landing mission, which arrived there two months ago, has produced the digital era’s first high-resolution images from the lunar surface. But unlike NASA’s practice with its Mars rovers, Chinese officials have not produced any mosaics or panoramas from images taken by the Chang’e 3 lander or rover.

That task fell to amateurs.

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CHINA LANDS PROBE ON THE MOON

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BEIJING (AP) — Louise Watts reports: China on Saturday successfully carried out the world’s first soft landing of a space probe on the moon in nearly four decades, state media said, the next stage in an ambitious space program that aims to eventually put a Chinese astronaut on the moon.

This Saturday Dec. 14, 2013 photo released by China's Xinhua News Agency, shows a picture of the moon surface taken by the on-board camera of the lunar probe Chang'e-3 on the screen of the Beijing Aerospace Control Center in Beijing, capital of China. China on Saturday successfully carried out the world's first soft landing of a space probe on the moon in nearly four decades, the next stage in an ambitious space program that aims to eventually put a Chinese astronaut on the moon. (AP Photo/Xinhua, Wang Jianmin

This Saturday Dec. 14, 2013 photo released by China’s Xinhua News Agency, shows a picture of the moon surface taken by the on-board camera of the lunar probe Chang’e-3 on the screen of the Beijing Aerospace Control Center in Beijing (AP Photo/Xinhua, Wang Jianmin

The unmanned Chang’e 3 lander, named after a mythical Chinese goddess of the moon, touched down on Earth’s nearest neighbor following a 12-minute landing process.

The probe carried a six-wheeled moon rover called “Yutu,” or “Jade Rabbit,” the goddess’ pet. After landing Saturday evening on a fairly flat, Earth-facing part of the moon, the rover was slated to separate from the Chang’e eight hours later and embark on a three-month scientific exploration.

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China Steps Up the Space race: Lunar Probe This year

A Chinese Long March 3C rocket launches the unmanned Chang'e 2 lunar probe toward the moon on Oct. 1, 2010 from the Xichang Satellite Launch Center. Credit: CALT

Long March 3C rocket launches the unmanned Chang’e 2 lunar probe Oct. 1, 2010 from the Xichang Satellite Launch Center – Credit: CALT

China will launch a lander and rover to the moon by the end of this year, officials announced Wednesday, part of an ambitious plan to return samples from the lunar surface by 2017 and send humans within the next decade.

China will send a rover to the moon by the end of the year, officials announced Wednesday. Though it was originally slated for September, officials are now planning to launch early December 2 local time (December 1 in the US).

“The Chang’e-3 mission makes best use of a plethora of innovative technology. It is an extremely difficult mission that carries great risk,” said Ma Xingrui, head of China’s space exploration body and chief commander of the lunar program. Read the rest of this entry »