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News
A moon that puts a shine on its neighbours Feb 8
One of Saturn's moons is giving its neighbours a face lift. Astronomers in the US claim that material ejected from Enceladus is "sandblasting" the surfaces of neighbouring satellites, making them appear much more shiny than expected. The observations, which were made using the Hubble Space Telescope, could cast some doubt on how an object's albedo -- or shininess -- is used to determine when a moon or p***t was last geologically active (Science 315 815).
Bubbles compute in logical devices Feb 8
Logic gates that use tiny bubbles moving in a fluid have been created by Manu Prakash and Neil Gershenfeld of the Massachusetts Institute of Technology in the US. The two gates, which perform different logical functions, could be combined to perform any computation currently done by a conventional computer, says Prakash. The researchers have also used bubble logic to create a one-bit memory for storing information and therefore have all the components necessary to build a "bubble computer" (Science 315 832).
Multibillion-dollar collider plans unveiled Feb 8
Particle physicists released an outline design for the proposed International Linear Collider (ILC) at a meeting in Beijing this morning. The design details the components needed to build the 31 km-long facility and comes with an initial estimate of the collider's cost: a cool $6.5bn for the core project. Researchers see the ILC as the next big facility after the Large Hadron Collider, which is due to switch on at CERN later this year.
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