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Mars

Astronomers find ‘ghost dunes’ on Mars

July 17, 2018 by Paul Scott Anderson

Mars is a desert planet, a lot like some deserts on Earth, but much colder. Also just like Earth, the Martian deserts have vast dunes, …

Read MoreAstronomers find ‘ghost dunes’ on Mars

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NASA hopeful Opportunity rover will survive raging dust storm on Mars

June 15, 2018 by Paul Scott Anderson

If you felt a bit apprehensive about this morning’s media teleconference from NASA, you’re not the only one. The very long-lived Opportunity is facing its …

Read MoreNASA hopeful Opportunity rover will survive raging dust storm on Mars

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Curiosity rover makes intriguing new discoveries about Martian organics and methane

June 9, 2018 by Paul Scott Anderson

Is there or has there ever been life on Mars? We still don’t know the answer for sure, but two new findings announced yesterday morning …

Read MoreCuriosity rover makes intriguing new discoveries about Martian organics and methane

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Media Advisory: NASA update on Curiosity science results – June 7, 2018

June 4, 2018June 4, 2018 by Paul Scott Anderson

There will be a NASA live event on Thursday, June 7 discussing new science results from the Mars Curiosity rover. The details are still embargoed …

Read MoreMedia Advisory: NASA update on Curiosity science results – June 7, 2018

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‘Drill, Baby, Drill!’: Curiosity rover successfully tests new drilling technique on Mars

May 29, 2018May 29, 2018 by Paul Scott Anderson

After many months of testing and devising new techniques since experiencing mechanical problems, NASA’s Curiosity rover is finally drilling again! The latest test this past …

Read More‘Drill, Baby, Drill!’: Curiosity rover successfully tests new drilling technique on Mars

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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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