Images Dated 22nd October 2003

F/A-22 Raptor sits on the parking ramp

Nellis Air Force Base, Nevada, October 22, 2003 - A F/A-22 Raptor sits on the parking ramp. The F/A-22 is a new breed of super-fighter for the 21st century and is the first aircraft with the ability to fly at supersonic speeds without afterburners

© Stocktrek Images

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Subreflector of upgraded Arecibo radio telescope

Arecibo subreflector system. View of the 90-tonne dome housing the new gregorian subreflector system installed in 1997 for the Arecibo radio telescope. Note the people at upper right. This largest radio telescope in the world is situated in a natural crater in the mountains of Puerto Rico. The new subreflector system with two mirrors is suspended 130 metres above the fixed dish. It can send and receive signals to examine planets & asteroids, & also analyse Earth's upper atmosphere. To scan the sky the dome is steered above the 305m dish. The Arecibo upgrade includes a 16m high buffer screen around the dish and a new radar transmitter that increases Arecibo's power by 20 times

© DAVID PARKER/SCIENCE PHOTO LIBRARY

Alexandre Gustave Eiffel (1832-1923), engineer

Alexandre Gustave Eiffel (1832-1923). Historical artwork of the French engineer, Eiffel, with his most famous work the Eiffel Tower in the background. He was one of France's most prolific engineers and particularly famed for his bridge designs, including a 160-metre span railway bridge across the River Douro in Portugal. The Eiffel Tower at the Champs-de-Mars in Paris, was erected for the 1889 Paris Exhibition. The open-lattice steel tower stands 300 metres high, and was the tallest man-made construction in the world until 1930. Eiffel also designed the framework for the Statue of Liberty in New York, and built the world's first aerodynamics laboratory

© SHEILA TERRY/SCIENCE PHOTO LIBRARY