Pluto “New Horizones”

 

Pluto photographs thrill Nasa scientists after nine-year mission

Nasa spacecraft makes history as the first spacecraft to reach distant dwarf planet, the last unexplored world in solar system

 

Cheers, whoops and flag waving broke out at Nasa’s New Horizons control centre as scientists celebrated the spacecraft’s dramatic flyby of Pluto, considered the last unexplored world in the solar system.

The probe shot past at more than 28,000mph (45,000 km/h) at 12.49pm BST (7.49am ET) on a trajectory that brought the fastest spacecraft ever to leave Earth’s orbit within 7,770 miles of Pluto’s surface.

The moment, played out on Tuesday to the sound of The Final Countdown by the 1980s glam metal band Europe, marked a historic achievement for the US, which can now claim to be the only nation to have visited every planet in the classical solar system.

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Members of the New Horizons science team react to seeing the probe’s last and sharpest image of Pluto before its closest approach. Photograph: Bill Ingalls/AP

“It feels good,” said Alan Stern, lead scientist on the mission. “So many people put so much work into this around the country. We’ve completed the initial reconnaissance of the solar system, an endeavour started under President Kennedy.”

John Grunsfeld, head of Nasa’s science mission directorate, said that images beamed back from New Horizons on its approach showed Pluto to be an “extraordinarily interesting and complex world”.

“It’s just amazing. It’s truly a hallmark in human history,” he said of the encounter with Pluto. “It’s been an incredible voyage.”

Stephen Hawking, the Cambridge cosmologist, joined in congratulating the New Horizons team in a recorded message. “Billions of miles from Earth this little robotic spacecraft will show us that first glimpse of mysterious Pluto, a distant icy world on the edge of our solar system. The revelations of New Horizons may help us to understand better how our solar system was formed. We explore because we are human and we long to know,” he said.

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