Images Dated 10th March 2004

Hubble Ultra Deep Field galaxies

Ultra Deep Field galaxies. Hubble Space Telescope Ultra Deep Field, the deepest view ever taken of the universe in 2004. Each dot of light is a separate galaxy. Some of these are amongst the most distant objects ever seen, over 13 billion light years away, and thus over 13 billion years old. To detect these extremely faint galaxies, the HST focused its ACS and NICMOS cameras on an apparently empty patch of sky for one million seconds. The infrared NICMOS data shows galaxies at a redshift of up to 12, which were among the first objects to form in the universe after its birth 13.7 billion years ago

© NASA/ESA/STSCI/S.BECKWITH, HUDF TEAM/ SCIENCE PHOTO LIBRARY

Quantum entanglement equipment

Quantum physicists with equipment used in a quantum entanglement experiment. Entanglement is a property of a pair of particles in which a change to one has an instantaneous effect on the other, no matter how far apart they are. Researchers at Vienna University, Austria, split entangled photon pairs and sent each photon to a separate receiver. They performed this both in fibre optic wires and through the air. Entanglement was confirmed by the detectors in both cases. It is hoped that this entanglement will find uses in cryptography, quantum computing and satellite communications. Photographed in 2003. The double exposure effect illustrates the oddness of the quantum world

© VOLKER STEGER/SCIENCE PHOTO LIBRARY