This image made available by NASA in March 2017 shows Pluto illuminated from behind by the sun as the New Horizons spacecraft travels away from it at a distance of about 120,000 miles (200,000 kilometers). On Friday, April 7, 2017, the spacecraft will reach a halfway between Pluto and its next much, much smaller stop, the Kuiper Belt object 2014 MU69. (NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute via AP)
Republished April 04, 2017 - 10:08 AM
Original Publication Date April 04, 2017 - 8:40 AM
CAPE CANAVERAL, Fla. - NASA's New Horizons spacecraft is now halfway between Pluto and its next much, much smaller stop.
New Horizons — which reached the milestone this week — is bound for an even more remote object called 2014 MU69. Like Pluto, the object orbits in our solar system's twilight zone known as the Kuiper Belt, but is barely 1 per cent its size. MU69 is nearly 1 billion miles (1.6 billion kilometres) beyond Pluto.
The spacecraft will swoop past MU69 on Jan. 1, 2019.
"That flyby will set the record for the most distant world ever explored in the history of civilization," chief investigator Alan Stern of Southwest Research Institute said in a statement.
With another 466 million miles (750 million kilometres) remaining, New Horizons will go into a five-month hibernation later this week.
Although still zooming along, the spacecraft is slowing down slightly as it gets farther from the sun. Besides aiming for MU69, New Horizons will study a couple dozen other Kuiper Belt objects from afar.
New Horizons arrived at Pluto in July 2015, becoming its first visitor from Earth. It launched from Cape Canaveral in 2006.
The spacecraft is currently 3.5 billion miles (5.7 billion kilometres) from home. It takes radio signals five hours and 20 minutes to reach the spacecraft from the control centre at Johns Hopkins University in Laurel, Maryland.
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Online:
Johns Hopkins: http://pluto.jhuapl.edu/
News from © The Associated Press, 2017