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News: December 2005

Review of the year

PhysicsWeb looks back at 2005

Ferromagnets and superconductors make negative-index materials

Physicists have discovered a new type of negative-refractive-index material

Hubble reveals dark-matter details

Astronomers have located dark matter in two young galaxy clusters

Fluids mix in reverse

Beads stirred in a viscous fluid can amazingly return to their starting positions if the direction of mixing is reversed

Ions trapped on a chip

New microscale traps could allow many qubits to be integrated in a workable quantum computer

DNA pyramids make their debut

Physicists develop DNA tetrahedra that can be used as building blocks for nanostructures

Perseus arm is closer than thought

New measurements suggest the distance to the Milky Way's nearest spiral arm is less than astronomers previously believed

Ministers support Europe in space

The European Space Agency gets nearly full funding for its forthcoming activities

Photons create primitive quantum network

Single photons can be stored in an atomic cloud and retrieved without losing their quantum character

Exploding dark-matter balls predicted

Physicists think a new form of dark matter may exist

Exotic materials and pulsars win European prize

Researchers studying "left-handed" materials and pulsars are awarded shares of the €1m Descartes Prize

Optical devices get fishy

Fish waste has attractive optical properties

Entanglement reaches new levels

Physicists have entangled a record number of particles