Images Dated 5th June 2003

Petter Solberg in action, Subaru Impreza WRC03, Acropolis Rally 2003. Photo: McKlein/LAT

Petter Solberg in action, Subaru Impreza WRC03, Acropolis Rally 2003.
Photo: McKlein/LAT

ATHENA antimatter experiment

ATHENA antimatter laboratory. Technician working on the ATHENA experiment at CERN, Geneva, Switzerland. ATHENA is designed to create antihydrogen, the antimatter form of hydrogen. Normal hydrogen comprises a negative electron orbiting a positive proton. Antihydrogen comprises a positron (antimatter electron) and a negative antiproton. Antihydrogen is made by combining antiprotons and positrons. The antiprotons are slowed in the Antiproton Decelerator (AD), which allows the resulting antihydrogen atoms to be studied. Any differences found between hydrogen and antihydrogen could explain why the universe is made of matter rather than antimatter

© DAVID PARKER/SCIENCE PHOTO LIBRARY

Artwork of osteoarthritis of knee joint

Osteoarthritis of knee. Illustrationof the joint of a human knee affected byosteoarthritis. The cartilage (purple) at the endof the thigh bone (femur, at top) has worn away inpatches. Irregular bony outgrowths, calledosteophytes, have grown at the top of the shinbone (tibia). This picture shows the kneecap(patella) hanging loose to reveal the joint. Thefibrous purple tissues are tendons and ligaments, which hold muscles and bones together insidejoints. Osteo- arthritis results from wear andtear of joints. It is most common in the elderlyand obese. Deterior- ation of joints causes pain, stiffness and lack of mobility. Treatment includesdrugs and surgery

© John Bavosi/Science Photo Library