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New Horizons collects first science on a post-Pluto object

19 May 2016 Astronomy Now

Warming up for a possible extended mission as it speeds through deep space, NASA’s New Horizons spacecraft has now twice observed 1994 JR1, a 90-mile-wide Kuiper Belt object (KBO) orbiting more than 3 billion miles from the Sun. Science team members have used these observations to reveal new facts about this distant remnant of the early solar system.

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Dwarf planet Haumea’s lunar system smaller than anticipated

17 May 2016 Astronomy Now

Haumea, a dwarf planet on the edge of our solar system, doesn’t have the same kind of moons as its well-known cousin Pluto according to a new study. This is despite original evidence that suggested they both formed in similar giant impacts and adds to the mystery shrouding how these icy bodies formed.

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Hubble discovers moon orbiting the dwarf planet Makemake

26 April 2016 Astronomy Now

NASA’s Hubble Space Telescope has spotted a small, dark moon orbiting Makemake, the second brightest icy dwarf planet — after Pluto — in the Kuiper Belt. The moon, provisionally designated S/2015 (136472) 1 and nicknamed MK 2, is estimated to be 100 miles in diameter. Makemake and its moon are more than 50 times farther away than Earth is from the Sun.

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High-speed CHIMERA to scout for Kuiper Belt objects

4 March 2016 Astronomy Now

At the Palomar Observatory near San Diego, astronomers are busy tinkering with a high-tech instrument that could discover a variety of objects both far from Earth and closer to home. The Caltech HIgh-speed Multi-colour camERA (CHIMERA) system is looking for objects in the Kuiper Belt, the band of icy bodies beyond the orbit of Neptune that includes Pluto.

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New Horizons finds possible ice volcanoes on Pluto

9 November 2015 Astronomy Now

From possible ice volcanoes to twirling moons, NASA’s New Horizons science team is discussing more than 50 exciting discoveries about Pluto at this week’s 47th Annual Meeting of the American Astronomical Society’s Division for Planetary Sciences. The two cryovolcano candidates are large features measuring tens of miles across and several miles high.

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New Horizons’ manoeuvres put it on course for post-Pluto rendezvous

8 November 2015 Astronomy Now

NASA’s New Horizons spacecraft, speeding toward deeper space at more than 32,000 miles per hour, has successfully performed a series of targeting manoeuvres that set it on course for a January 2019 encounter with Kuiper Belt object 2014 MU69. This ancient body is more than a billion miles beyond Pluto. The propulsive manoeuvres were the most distant trajectory corrections ever performed by any spacecraft.

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NASA’s New Horizons team selects potential Kuiper Belt flyby target

28 August 2015 Astronomy Now

NASA has selected the potential next destination for the New Horizons mission to visit after its historic 14 July flyby of the Pluto system. The target is a 30-mile-wide Kuiper Belt object (KBO) known as 2014 MU69 that orbits nearly a billion miles beyond Pluto. New Horizons expects to reach the object, nicknamed “PT1” (Potential Target 1), on 1 January 2019.