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Article Images

ESA's 'Cosmic Vision'

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Credits: ESA

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The Sun pictured by the SOHO Extreme ultraviolet Imaging Telescope (EIT) on 28 October 2003.

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This image was returned on 14 January 2005, by ESA's Huygens probe during its successful descent to land on Titan. This is the colour view, following processing to add reflection spectra data, gives a better indication of the actual colour of the surface. Initially thought to be rocks or ice blocks, they are more pebble-sized. The two rock-like objects just below the middle of the image are about 15 centimetres (left) and 4 centimetres (centre) across respectively, at a distance of about 85 centimetres from Huygens. The surface is darker than originally expected, consisting of a mixture of water and hydrocarbon ice. There is also evidence of erosion at the base of these objects, indicating possible fluvial activity.

Credits: ESA/NASA/JPL/University of Arizona

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Searching for gravitational waves with LISA

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LISA will be the first space-based mission to attempt the detection of gravitational waves. These are ripples in space that are emitted by exotic objects such as black holes.

Credits: ESA

Last update: 1 May 2007

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