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15/07/2015 17:33 BST | Updated 16/07/2015 06:59 BST

Pluto And Charon Close-Up Pictures From New Horizons 'Amazes' NASA Scientists

Scientists have released the first up-close images ever of Pluto and its large moon Charon. And they say they're amazed. The long-awaited images were unveiled Wednesday in Maryland, home to mission operations for NASA's New Horizons spacecraft.

A zoom-in of Pluto reveals an icy range about as high as the Rockies. To the scientists' great surprise, there are no impact craters. On Charon, deep troughs and canyons can be seen.

The images were collected as New Horizons swept within 7,700 miles of Pluto on Tuesday, becoming Pluto's first visitor in its 4.5 billion-year existence.

Scientists didn't know until Tuesday night — when the spacecraft phoned home — that the encounter was a success. New Horizons already is 1 million miles beyond the dwarf planet, and 3 billion miles from Earth. The image of Charon boasts a dark patch at its north pole, which has been informally called "Mordor" by NASA scientists.

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An image provided by NASA shows a region near Pluto's equator with a range of mountains captured by the New Horizons spacecraft

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Wednesday image shows Pluto's largest moon, Charon, made by the New Horizons spacecraft

Travelling more than 8 million kilometres at a speed of 30,800 miles per hour, the small spacecraft has taken nine years to reach Pluto. Such is the distance, communications from the craft take hours to travel back to Earth.

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An artist’s concept of the New Horizons spacecraft as it approaches Pluto and its largest moon, Charon

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Guests and New Horizons team members countdown to the spacecraft's closest approach to Pluto

The fly-by is a major landmark for space exploration with Pluto the last of the nine planets of the Solar System to be visited by a spacecraft from Earth. Echoing the excitement of the scientists, US President Barack Obama tweeted his congratulations to the team and highlighted the event as an example of American innovation.

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