NASA counts down to launch of first spacecraft to 'touch Sun'

NASA counted down Friday to the launch of a $1.5 billion spacecraft that aims to plunge into the Sun’s sizzling atmosphere and become humanity’s first mission to explore a star.

The car-sized Parker Solar Probe is scheduled to blast off on a Delta IV Heavy rocket from Cape Canaveral, Florida early Saturday.

The 65-minute launch window opens at 3:33 am (0733 GMT), and the weather forecast is 70 per cent favourable for takeoff, NASA said.

The probe’s main goal is to unveil the secrets of the corona, the unusual atmosphere around Sun.

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