Ryuji Kris Kawakami

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Kepler satellite: astronomers may have discovered 461 new planets

Nasa's Kepler satellite reveals several of the suspected planets are in their star's habitable zone where life might exist<p>Astronomers have found possible evidence for 461 new planets outside our solar system, using measurements from Nasa's planet-hunting satellite, Kepler.<p>The data has also been …

Pluto's moons campaign backed by Star Trek's William Shatner - video

An online poll to decide a name for a pair of Pluto's newly discovered moons is taking place in the US. Star Trek actor William Shatner, along with fans of the TV show, is campaigning for one of the celestial bodies to be called Vulcan after the home planet of Spock. Pluto's three other known moons …

William Shatner

How big is the universe … compared with a grain of sand? - video

'You'll never get your head around how big the universe is,' warns astronomer Pete Edwards of the University of Durham in this film about measuring astronomical distances. 'There are as many stars in the universe as there are grains of sand on the Earth.' So how far is a light year? And supposing …

High-resolution Nasa images show magnetic braids of the sun - video

Nasa images of the sun's outer atmosphere, the highest resolution pictures ever achieved. The agency launched the High Resolution Coronal Imager, or Hi-C, on 11 July 2012 from White Sands missile range in New Mexico. Hi-C's image sequences show the twisting up or braiding of the magnetic field that …

Magnetism

Edward Snowden: NSA whistleblower answers reader questions

The whistleblower behind the biggest intelligence leak in NSA history answered your questions about the NSA surveillance revelations

Snowden spy row grows as US is accused of hacking China

Whistleblower charged with espionage reportedly claims US authorities accessed millions of private text messages in China<p>Edward Snowden, the former CIA technician who blew the whistle on global surveillance operations, has opened a new front against the US authorities, claiming they hacked into …

The NSA's mass and indiscriminate spying on Brazilians

As it does in many non-adversarial countries, the surveillance agency is bulk collecting the communications of millions of citizens of Brazil<p>I've written an article on NSA surveillance for the front page of the Sunday edition of O Globo, the large Brazilian newspaper based in Rio de Janeiro. The …

Snowden's Venezuela offer 'last chance' for political asylum – Russian official

Alexei Pushkov tweets warning as Martin Dempsey claims whistleblower's leaks have damaged US relations with allies<p>Venezuela's offer of asylum could be NSA whistleblower Edward Snowden's "last chance" to avoid extradition to the US, an influential member of the Russian parliament suggested …

Edward Snowden: 'The US government will say I aided our enemies' – video interview

In the second part of an exclusive interview with Glenn Greenwald and Laura Poitras, former NSA contractor Edward Snowden contemplates the reaction from the US government to his revelations of top-secret documents regarding its spying operations on domestic and foreign internet traffic, email and …

Edward Snowden accuses US of illegal, aggressive campaign

Whistleblower uses first public appearance since surveillance leaks to defend decision and praise states that offered asylum<p>The American whistleblower Edward Snowden has accused the US of waging a campaign of "historically disproportionate aggression" against him during an extraordinary meeting …

Secret court lets NSA extend its trawl of Verizon customers' phone records

Latest revelation an indication of how Obama administration has opened up hidden world of mass communications surveillance<p>The National Security Agency has been allowed to extend its dragnet of the telephone records of millions of US customers of Verizon through a court order issued by the secret …

NSA surveillance: narrow defeat for amendment to restrict data collection

First major challenge to NSA's bulk collection of phone records defeated by only 217 votes to 205 in House of Representatives • The full roll call of votes<p>The first major legislative challenge to the National Security Agency's bulk collection of phone records from millions of Americans was defeated …

Edward Snowden's father says FBI asked him to fly to Moscow

Lon Snowden says his son will be 'treated horribly' if he returns to US and in his place he would stay in Russia<p>The father of the whistleblower Edward Snowden has said the FBI tried to persuade him to fly to Moscow so that he could encourage his son to return to the United States.<p>"I said: 'I want …

XKeyscore: NSA tool collects 'nearly everything a user does on the internet'

• XKeyscore gives 'widest-reaching' collection of online data • NSA analysts require no prior authorization for searches • Sweeps up emails, social media activity and browsing history • NSA's XKeyscore program – read one of the presentations<p>A top secret National Security Agency program allows …

Seymour Hersh on Obama, NSA and the 'pathetic' American media

Pulitzer Prize winner explains how to fix journalism, saying press should 'fire 90% of editors and promote ones you can't control'<p>Seymour Hersh has got some extreme ideas on how to fix journalism – close down the news bureaus of NBC and ABC, sack 90% of editors in publishing and get back to the …

Revealed: how US and UK spy agencies defeat internet privacy and security

• NSA and GCHQ unlock encryption used to protect emails, banking and medical records • $250m-a-year US program works covertly with tech companies to insert weaknesses into products • Security experts say programs 'undermine the fabric of the internet'<p>• Q&A: submit your questions for our privacy …

Animal astronauts: the unsung heroes of space exploration

Albert (I and II) the monkeys, Laika the dog, Felix the cat, and other animals – a brief history of non-human space flight<p>From intrepid turtles to pioneering jellyfish, a host of animals have made their mark as the unsung heroes of space exploration.<p>Early animal astronauts were used to test the …

Mars Curiosity rover to continue roving after technical glitch

Nasa mission controllers will put Curiosity through basic moves in cautious return to active service after it went into safe mode<p>Nasa engineers have overcome a computer glitch that shut down the space agency's car-sized Mars rover, Curiosity, earlier this week.<p>The $2.5bn rover went into a …

Roving

Mission to the Mars Desert Research Station in Utah – in pictures

Photojournalist Jim Urquhart always wanted to go into space. Here he comes close to his dream, documenting a team of scientists who are using the Utah desert as a dry run for future missions to Mars