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James Webb telescope: Instrument to chase 'first stars'

Europe has reached another milestone in its contribution to Hubble's successor - the James Webb Space Telescope.

An industrial team led from Astrium in Germany has completed the build of the Near-Infrared Spectrometer, one of four instruments that will go in JWST.

Part of NirSpec's job will be to help identify the first groupings of stars to shine in the Universe.

Prof Mark McCaughrean, from the European Space Agency, told our correspondent Jonathan Amos that NirSpec's production brought to an end Europe's main engineering activities on JWST.

Go to next video: 'First light' instrument finished