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Physicists at The Australian National University (ANU) and University of Queensland (UQ) have produced near-perfect clones of quantum information using a new method to surpass previous cloning limits.

A global race is on to use quantum physics for ultra-secure encryption over long distances according to Prof Ping Koy Lam, node director of the ARC Centre of Excellence for Quantum Computation and Communication Technology (CQC2T) at ANU.

The new cloning method uses high performance optical amplifiers to clone light encoded with —it is possible this technique could allow quantum encryption to be implemented with existing fibre optic infrastructure.

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Elon Musk is obsessed with space. At age 30, he founded SpaceX. At age 41, he oversaw the first cargo mission to the International Space Station by a private company. And at age 12, as a kid living in South Africa, he made a space-themed PC game called Blastar. Now, thanks to the power of the internet, you can play that game.

Musk sold the code for Blastar for $500 to the magazine PC and Office Technology, and a reproduction of the page it appeared on was published in Ashlee Vance’s biography Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future. From there, Tomas Lloret Llinares — a software engineer at Google — took the code and rebuilt the game to work in HTML5.

Your mission, as the game’s lonely space pilot, is to “destroy [the] alien freighter carrying deadly hydrogen bombs and status beam machines.” Blastar is mostly a mix of Space Invaders and Asteroid, though it’s much more basic. There is never more than two ships on the screen, there are few sound effects, and — like many games of its time — it really has no ending. It’s almost unimpressive; that is, until you remember that it was made by a 12-year-old in 1984.

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Elon Musk wants to launch a million people to Mars in the event some apocalyptic disaster eventually ruins Earth. And he wants it to be somewhat affordable — US $200,000 or less per person.

To that end the SpaceX CEO outlined his plan to colonise Mars on September 27, including how his Interplanetary Transport System (ITS) of rockets, spaceships, fuel pods, and other crucial components would get the job done.

Still, the full presentation at the International Astronomical Congress in Guadalajara, Mexico, barely scratched the surface.

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It’s one of the basic facts of science: Heat something and it expands. But a team of US scientists has gone counterintuitive and invented a 3D-printed material that shrinks when heated. Developed as part of DARPA’s program to study materials with controlled microstructure architecture, the lightweight metamaterial exhibits what the researchers call “negative thermal expansion.”

Metamaterials are one of those things that come out of the lab with an air of enchantment about them. Basically, they’re made up of composite materials, like metals, plastics, or ceramics, engineered into repeating, microscopic structures. Depending on how these structures are designed, they can give the metamaterial properties that aren’t found in nature and may not even be derived from the source materials themselves.

The study by a team from the Lawrence Livermore National Laboratory’s (LLNL) Additive Manufacturing Initiative in partnership with the University of Southern California, MIT, and the University of California, Los Angeles, used a 3D printing process called projection microstereolithograpy to form a polymer and a polymer/copper composite into a highly complex 3D bi-material microlattice structure. To put it more simply, they printed a material made of two substances to form a pattern by printing out the polymer in a layer, cleaning the surface to avoid contamination, then printing the polymer/copper composite, then repeating.

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