NASA telescope takes off to discover early cosmic history

NASA's multi-billion dollar James Webb space telescope to liftoff on Christmas day, aims to see the beginning of time

The James Webb Space Telescope has infrared vision, allowing it to peer deeper into the universe, all the way to the first stars and galaxies..

The launch, scheduled in a brief window after 9:20 am on Saturday, will send the telescope on a month-long journey to its remote orbit. Speaking on social media, Webb project co-founder John Mather described the telescope's unprecedented sensitivity.All that power is needed to detect the weak glow emitted billions of years ago by the very first galaxies to exist and the first stars being formed.Its mirror measures 6.5 metres in diameter - three times the size of the Hubble's mirror - and is made of 18 hexagonal sections.

"Exceptional measures for an exceptional client," said a European Space Agency official in Kourou on Thursday.

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