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The Great Red Spot in stunning detail

September 14, 2010 by Paul Scott Anderson

There is a great new blog post over at The Planetary Society Blog regarding a new, enhanced moasaic image of Jupiter’s Great Red Spot, from …

Read MoreThe Great Red Spot in stunning detail

Bridges on the Moon

September 13, 2010 by Paul Scott Anderson

This is interesting; the Lunar Reconnaissance Orbiter has photographed the first known naturally forming bridges on the moon. Natural bridges on Earth usually result from …

Read MoreBridges on the Moon

Opportunity rover now halfway to Endeavour crater

September 10, 2010 by Paul Scott Anderson

The Opportunity rover passed the halfway mark this week on its long journey from Victoria crater to the huge 22 kilometre (14 mile) diameter Endeavour crater. …

Read MoreOpportunity rover now halfway to Endeavour crater

Welcome to The Meridiani Journal (formerly Planetaria)

September 10, 2010 by Paul Scott Anderson

Welcome to the new and improved version of this blog! First, it was necessary to go back to the original name, The Meridiani Journal. The …

Read MoreWelcome to The Meridiani Journal (formerly Planetaria)

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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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