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Cassini

‘Towering hexagon’ and auroras: Saturn’s north polar wonders

September 11, 2018September 11, 2018 by Paul Scott Anderson

Saturn’s north pole is an incredibly active place, data from NASA’s Cassini mission and the Hubble Space Telescope have shown, with its massive hexagonal weather …

Read More‘Towering hexagon’ and auroras: Saturn’s north polar wonders

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Where to look for life on Titan

August 8, 2018 by Paul Scott Anderson

NASA’s Cassini spacecraft and ESA’s Huygens lander showed that Saturn’s large moon Titan mimics Earth in many ways. But Titan displays different kinds of chemistry in …

Read MoreWhere to look for life on Titan

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Enceladus’ water plumes contain life clues

July 3, 2018 by Paul Scott Anderson

Saturn’s moon Enceladus might be tiny, but it has the potential to help answer one of the biggest questions ever – are we alone? NASA’s …

Read MoreEnceladus’ water plumes contain life clues

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Reliving Cassini’s final moments: Engineers recreate spacecraft’s fatal plunge into Saturn’s atmosphere

October 18, 2017 by Paul Scott Anderson

It has been just over a month now since the Cassini spacecraft took its final plunge into Saturn’s atmosphere, ending an incredible mission of 13 …

Read MoreReliving Cassini’s final moments: Engineers recreate spacecraft’s fatal plunge into Saturn’s atmosphere

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‘All good things’: Cassini finishes its epic mission at Saturn in a blaze of glory

September 17, 2017 by Paul Scott Anderson

The moment that many people have been waiting for – albeit with great sadness – has finally arrived, with the Cassini spacecraft ending its mission …

Read More‘All good things’: Cassini finishes its epic mission at Saturn in a blaze of glory

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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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