Sc/Environment Photogallery

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Staff of the Office of Criminal Investigation of the German state demonstrate a new technique for collecting fingerprints.

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U.S. astronaut and Expedition 14 Cmdr. Michael Lopez-Alegria waves shortly after his landing in Russian Souyz TMA-9 space capsule about 500 km (310 miles) south-west of the Kazakh town of Karaganda, Saturday, April 21, 2007. (AP Photo/Sergei Ilnitsky, Pool)

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Former Microsoft software developer, Charles Simonyi (left), Russian cosmonauts Oleg Kotov (centre) and Fyodor Yurchikhin (right) pose after a press conference at Baikonur Cosmodrome in Kazakhstan, Friday, April 6, 2007. (AFP/Maxim Marmur)

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The moon shadowed by the Earth is seen during a eclipse on Sunday, March 42007 in Algiers. (AFP/Fayez Nureldine)

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European Space Agency (ESA) showing observations from telescope Hubble which shows the last colourful display of a star like our Sun in the act of dying. The star is ending its life by casting off its outer layers of gas, which formed a cocoon around the star's remaining core, Wednesday, February 14 2007. (AFP/Esa Hubble)

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This 1997 NASA file image shows the Hubble Space Telescope as seen from the Space Shuttle Discovery. The Hubble Space Telescope's main and most powerful camera was shut down by an electrical short-circuit, NASA officials, 29 January, 2007. (AFP)

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This image provided by NASA's Hubble Space Telescope team shows an artist's concept of Kuiper Belt object 2003 UB313 (nicknamed "Xena") and its satellite "Gabrielle." (AP Photo/NASA)

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This Hubble Space Telescope image obtained on Sunday, December 17, 2005 shows Sirius, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B(lower-L). The cross-shaped diffraction spikes and concentric rings around Sirius, and the small ring around Sirius B, are artifacts produced within the telescope's imaging system. (AFP Photo/HO/NASA)

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Image provided by the journal Science of an ultraviolet-induced fluorescence photograph of an Archaeopteryx specimen shows the specimens preserved bone substance of the skeleton with wing and tail feather impressions of the tenth specimen of the first known bird, Archaeopteryx, in ventral view. (AP Photo/Science)

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A photo rleased by the Census ofMarine Life shows a new species of comb jelly, a cydipppid ctenophore, discovered by Census scientists during a month-long expedition to the Arctic Ocean. (AP Photo/HO/Kevin Raskoff/Census of Marine Life)

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