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Pluto

Mapping new worlds: Researchers release first global maps of Pluto and Charon

July 25, 2018 by Paul Scott Anderson

When New Horizons sped past Pluto and its moons in July 2015, it revealed some incredible new worlds to explore. They are no longer just …

Read MoreMapping new worlds: Researchers release first global maps of Pluto and Charon

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Dunes on Pluto? Yes, but made of methane ice

June 9, 2018 by Paul Scott Anderson

We all know how common sand dunes are on Earth – just go to practically any desert region to see them in their various shapes …

Read MoreDunes on Pluto? Yes, but made of methane ice

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Pluto and beyond: New Horizons’ next Kuiper Belt rendezvous only one year away

February 26, 2018January 4, 2018 by Paul Scott Anderson

Happy New Year! As well as simply the start of a new year, today also marks another significant date – exactly one year from now, …

Read MorePluto and beyond: New Horizons’ next Kuiper Belt rendezvous only one year away

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‘Penitentes on steroids’: Scientists solve enigma of Pluto’s massive ice blades

October 8, 2017October 8, 2017 by Paul Scott Anderson

Pluto is an intriguing little world, full of geological surprises, as New Horizons revealed back in 2015. This cold, remote body was expected to be …

Read More‘Penitentes on steroids’: Scientists solve enigma of Pluto’s massive ice blades

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‘Hopping around’ on Pluto? Exciting lander mission concept presented at NASA symposium

September 27, 2017 by Paul Scott Anderson

In 2015, the New Horizons spacecraft provided our first up-close look at Pluto and its moons, helping to transform our knowledge about these small, cold …

Read More‘Hopping around’ on Pluto? Exciting lander mission concept presented at NASA symposium

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About Planetaria

About Planetaria



Pluto backlit by the Sun, as seen by New Horizons in 2015

Planetaria (formerly The Meridiani Journal) is a chronicle of planetary exploration, both in our own Solar System and beyond. Many continuing discoveries, such as the geysers of Enceladus, the subsurface ocean of Europa, the methane rivers, lakes and seas of Titan, the mountains and glaciers of Pluto, the cold but beautiful deserts of Mars and the thousands of exoplanets orbiting other stars make this an exciting time of exploration and discovery.

I publish Planetaria as a personal blog, a complement to my other freelance space writing for EarthSky and AmericaSpace.

- Paul Scott Anderson

Exoplanet Count

Exoplanet Count

Current Confirmed: 3,946
Current Candidates: 3,520
Potentially Habitable: 49

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