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TESS

TESS begins hunt for other Earths, opening new chapter in exoplanet research

July 31, 2018 by Paul Scott Anderson

The next big chapter in exoplanet research has begun – NASA’s Transiting Exoplanet Survey Satellite (TESS) has started its science observations. This is exciting since …

Read MoreTESS begins hunt for other Earths, opening new chapter in exoplanet research

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SpaceX launches TESS spacecraft in quest to discover other Earths

April 25, 2018April 19, 2018 by Paul Scott Anderson

Note: this article was first published on AmericaSpace as a preview to the now-successful launch, and has been updated accordingly. The discovery of thousands of …

Read MoreSpaceX launches TESS spacecraft in quest to discover other Earths

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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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