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Help Name Pluto’s Moons
Pluto as seen by the Hubble Space Telescope. Image Credit NASA, ESA and M.Buie (Southwest Research Institute) The fourth and fifth moons of Pluto are set to be named, with the moons discoverers asking...
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The evolving definition of a planet
When, in August 2006, the International Astronomical Union (IAU) formally set down the definition of a planet (and demoted Pluto to a dwarf planet for evermore), it may have seemed like a final act....
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Pluto’s defining moment
It’s been almost seven years since Pluto was re-classified as a dwarf planet. At 15:34 CEST on 24 August 2006, the International Astronomical Union voted on two key resolutions that saw Pluto become a...
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Pluto flyby on the Horizon
This past Tuesday, 18 February, marked the 84th anniversary of the discovery of Pluto, our favourite dwarf planet. Pluto as seen by the Hubble Space Telescope. Image Credit: NASA, ESA and M.Buie...
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PLUTO: T-20 Days and Counting
Australia’s key role in NASA’s New Horizons mission Historic Encounter: Artist’s concept of the New Horizons spacecraft flying past Pluto and Charon. Image: NASA After a voyage of 3,443 days and...
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