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Russian space experts called in to examine 200-kilo 'UFO fragment' which fell from the sky in Siberia. Six foot metal fragment fell near remote village in SiberiaDoes not appear to be from earthly missiles or rocketsRussian space experts say, 'The object is not related to space technology'Under police guard as experts examine it.

Russian space experts called in to examine 200-kilo 'UFO fragment' which fell from the sky in Siberia

Amazing 3D printer in action: Watch a working wrench being printed from powder. By Ted Thornhill Published: 11:45 GMT, 20 March 2012 | Updated: 18:54 GMT, 20 March 2012 We’re going to need a lot of tools as we expand into space – to build and maintain space stations and craft.

Amazing 3D printer in action: Watch a working wrench being printed from powder

However, the problem of how to replace tools should they break has always been a worry. After all, it’s quite an undertaking to fly them into orbit. But now scientists believe astronauts will be able to build unlimited replacements – simply by printing them. Hi-tech: The Z Corporation's 3D printer can make just about anything Image is everything: The wrench is scanned into a computer It sounds like science fiction, but a YouTube video made by National Geographic shows that the remarkable process is actually science fact. Theoretical physicist David Kaplan, from Johns Hopkins University, visits a company called Z Corporation in Burlington, Massachusetts, which specialises in 3D printers that can make almost anything – even with moving parts.

Felix Baumgartner space jump 2012: Austrian daredevil taking skydiving to new heights. By Daily Mail Reporter Published: 02:03 GMT, 16 March 2012 | Updated: 02:44 GMT, 17 March 2012 With New Mexico 13.6 miles below, daredevil skydiver Felix Baumgartner needs some space-age help before he even thinks about jumping.

Felix Baumgartner space jump 2012: Austrian daredevil taking skydiving to new heights

At the edge of space, with virtually no atmosphere, the pressurised suit and oxygen are vital as he contemplates the view from the capsule attached to his 100ft helium balloon. This, however, is merely a test run. He plans to try a world record jump from 23 miles above the Earth this summer. Scroll down to see the amazing jump. U.S. military unveil latest weapon... A ray beam that makes the enemy feel 'quite hot'

The nonlethal weapon, which can be mounted on a military vehicle, is primarily designed for crowd controlWeapon has been tested on more than 11,000 people, and in just two of those cases, it caused second-degree burns By Jill Reilly Published: 20:35 GMT, 11 March 2012 | Updated: 18:23 GMT, 12 March 2012 The US military have unveiled their infamous non-lethal weapon - an electromagnetic beam of fierce heat.

U.S. military unveil latest weapon... A ray beam that makes the enemy feel 'quite hot'

When the Active Denial System (ADS) is activated, it beams a high-frequency electromagnetic ray beam at a target up to one thousand metres (0.6 miles) away. Mounted on a military vehicle for crowd control, the waves create a heat so uncomfortable the natural response is to flee. Turn up the heat: Two versions of US Marine Corps trucks are seen carrying the Active Denial System - the non-lethal weapon uses directed energy and projects a beam of man-sized millimeter waves Statistics: When the weapon was tested on more than 11,000 people, it only caused second-degree burns on two people.

Mystery: U.S X-37B space plane has been in orbit for over a year. The X-37B has been circling the Earth at 17,000mph and was due to land in California in December By Ted Thornhill Updated: 18:36 GMT, 8 March 2012 The U.S Air Force’s highly secret unmanned space plane was supposed to stay in space for nine months, but it’s now been there for a year and three days – and no one knows what it’s doing.

Mystery: U.S X-37B space plane has been in orbit for over a year

The experimental craft has been circling Earth at 17,000 miles per hour and was due to land in California in December. However the mission of the X-37B orbital test vehicle was extended – for unknown reasons. Mystery tour: The mission of the X-37B space plane was extended after it spent nine months orbiting the Earth The plane resembles a mini space shuttle and is the second to fly in space. The first one landed last December at Vandenberg Air Force Base in California after more than seven months in orbit. The 29-foot, solar-powered craft had an original mission of 270 days. Questions: The unmanned space plane is the second of its kind to be sent up by the U.S. Stratocam: Google Earth mash-up allows users to find the best aerial photographs of the planet. By Eddie Wrenn Published: 14:20 GMT, 15 March 2012 | Updated: 08:30 GMT, 16 March 2012 A website which combines Google Earth with a simple ratings system allows users to find the most beautiful or unusual places on our planet.

Stratocam: Google Earth mash-up allows users to find the best aerial photographs of the planet

Stratocam, designed by ex-Dreamworks and Google employee Paul Rademacher, takes the outstanding aerial photography employed by the search engine's mapping service and allows visitors to his site to up-vote or down-vote user-submitted 'finds'. The photographs are randomly selected from 'snapshots' taken by users, and after a few clicks it becomes apparent just how varied, pretty, and colourful our little blue-green marble is. Plane graveyard: Scrapped jets line the dry and dusty ground in Arizona Caves in Faro, Portugal: A rocky beach sets the scene for a peaceful and tranquil area Frond of that view: Palm Island in Dubai makes for a startling image from up above Hawaii, USA: The volcanic island gets plenty of upvotes on new website Stratocam Is this lego?