Associazione Arma Aeronautica Sezione Roma 2 Luigi Broglio

Astronomers analyze atmosphere of exoplanet unlike any in our solar system.

Credit: NEW ATLAS, by Michael Irving, July 3rd, 2019

Credit: NASA/ESA/D Player

So far we've spotted more than 4,000 planets orbiting stars other than our Sun, but we know very little about their atmospheres. Now, NASA astronomers have managed to probe the atmosphere of GJ 3470 b, a planet unlike any in our solar system. It marks the first time for this kind of world, and could be a step towards identifying potentially habitable planets.

But until now, astronomers had never been able to take stock of what was in the atmosphere of this kind of world. To investigate, the Hubble and Spitzer space telescopes conducted a spectroscopic study of the planet, by analyzing the signatures of light that filtered through the air as it passed in front of its host star, as well as what was lost when the planet went behind the star.

The results were unexpected. The atmosphere was clear with thin hazes,……… 

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