NASA's New Horizons spacecraft approaches Pluto

An unmanned NASA spacecraft whizzed by Pluto on Tuesday, making its closest approach in the climax of a decade-long journey to explore the dwarf planet for the first time, the US space agency said.

Moving faster than any spacecraft ever built -- at a speed of about 30,800 miles per hour (49,570 kph) -- the flyby happened at 7:49 am (1149 GMT), with the probe running on auto-pilot. It was to pass by Pluto at a distance of 7,767 miles (12,500 kilometers).

"The New Horizons spacecraft passes its closest approach mark at Pluto after a three-billion-mile journey," a NASA commentator said as spectators waved flags in a crowded room at the Johns Hopkins Applied Physics Center outside the US capital, Washington. (AFP)

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